diff --git a/GMStepper/GMStepper.swift b/GMStepper/GMStepper.swift
index ab27ceb..6026345 100644
--- a/GMStepper/GMStepper.swift
+++ b/GMStepper/GMStepper.swift
@@ -233,7 +233,7 @@ import UIKit
         }
     }
 
-    required public init(coder aDecoder: NSCoder) {
+    required public init?(coder aDecoder: NSCoder) {
         super.init(coder: aDecoder)
         setup()
     }
diff --git a/GMStepperExample/GMStepperExample.xcodeproj/project.pbxproj b/GMStepperExample/GMStepperExample.xcodeproj/project.pbxproj
index 815e072..edbbafe 100644
--- a/GMStepperExample/GMStepperExample.xcodeproj/project.pbxproj
+++ b/GMStepperExample/GMStepperExample.xcodeproj/project.pbxproj
@@ -169,8 +169,9 @@
 		319C192A1B4843EB005EFEE5 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				LastSwiftMigration = 0700;
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0640;
+				LastUpgradeCheck = 0700;
 				ORGANIZATIONNAME = "Gunay Mert Karadogan";
 				TargetAttributes = {
 					319C19311B4843EB005EFEE5 = {
@@ -292,6 +293,7 @@
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@@ -358,6 +360,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = GMStepperExample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Debug;
@@ -368,6 +371,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = GMStepperExample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Release;
@@ -386,6 +390,7 @@
 				);
 				INFOPLIST_FILE = GMStepperExampleTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/GMStepperExample.app/GMStepperExample";
 			};
@@ -401,6 +406,7 @@
 				);
 				INFOPLIST_FILE = GMStepperExampleTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = "com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/GMStepperExample.app/GMStepperExample";
 			};
diff --git a/GMStepperExample/GMStepperExample/Base.lproj/LaunchScreen.xib b/GMStepperExample/GMStepperExample/Base.lproj/LaunchScreen.xib
index 36fb40c..5421ea3 100644
--- a/GMStepperExample/GMStepperExample/Base.lproj/LaunchScreen.xib
+++ b/GMStepperExample/GMStepperExample/Base.lproj/LaunchScreen.xib
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6214" systemVersion="14A314h" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="8191" systemVersion="15A279b" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6207"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8154"/>
         <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
     </dependencies>
     <objects>
@@ -13,17 +14,20 @@
             <subviews>
                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2015 Gunay Mert Karadogan. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="8ie-xW-0ye">
                     <rect key="frame" x="20" y="439" width="441" height="21"/>
+                    <animations/>
                     <fontDescription key="fontDescription" type="system" pointSize="17"/>
                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                     <nil key="highlightedColor"/>
                 </label>
                 <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="GMStepperExample" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
                     <rect key="frame" x="20" y="140" width="441" height="43"/>
+                    <animations/>
                     <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
                     <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
                     <nil key="highlightedColor"/>
                 </label>
             </subviews>
+            <animations/>
             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
             <constraints>
                 <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
diff --git a/GMStepperExample/GMStepperExample/Base.lproj/Main.storyboard b/GMStepperExample/GMStepperExample/Base.lproj/Main.storyboard
index 8d652d9..bf995ae 100644
--- a/GMStepperExample/GMStepperExample/Base.lproj/Main.storyboard
+++ b/GMStepperExample/GMStepperExample/Base.lproj/Main.storyboard
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="7706" systemVersion="14E46" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="vXZ-lx-hvc">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8191" systemVersion="15A279b" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="vXZ-lx-hvc">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7703"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8154"/>
         <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
     </dependencies>
     <scenes>
@@ -19,6 +20,7 @@
                         <subviews>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="AU6-4C-B2F" customClass="GMStepper" customModule="GMStepperExample" customModuleProvider="target">
                                 <rect key="frame" x="24" y="28" width="552" height="44"/>
+                                <animations/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                                 <constraints>
                                     <constraint firstAttribute="height" constant="44" id="6mC-hP-wFD"/>
@@ -34,6 +36,7 @@
                             </view>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="if7-U5-bAM" customClass="GMStepper" customModule="GMStepperExample" customModuleProvider="target">
                                 <rect key="frame" x="140" y="116" width="320" height="66"/>
+                                <animations/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                                 <constraints>
                                     <constraint firstAttribute="height" constant="66" id="iQi-6P-vt9"/>
@@ -62,6 +65,7 @@
                             </view>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="R9n-I0-fq7" customClass="GMStepper" customModule="GMStepperExample" customModuleProvider="target">
                                 <rect key="frame" x="200" y="226" width="200" height="66"/>
+                                <animations/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                                 <constraints>
                                     <constraint firstAttribute="width" constant="200" id="dVu-w0-mf0"/>
@@ -87,6 +91,7 @@
                             </view>
                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="U8X-8Z-7Mo" customClass="GMStepper" customModule="GMStepperExample" customModuleProvider="target">
                                 <rect key="frame" x="24" y="336" width="552" height="44"/>
+                                <animations/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                                 <constraints>
                                     <constraint firstAttribute="height" constant="44" id="aF3-T7-dIP"/>
@@ -127,6 +132,7 @@
                                 </variation>
                             </view>
                         </subviews>
+                        <animations/>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
                         <constraints>
                             <constraint firstItem="R9n-I0-fq7" firstAttribute="centerX" secondItem="U8X-8Z-7Mo" secondAttribute="centerX" id="3cD-WW-Qg4"/>
diff --git a/GMStepperExample/GMStepperExample/Info.plist b/GMStepperExample/GMStepperExample/Info.plist
index 93e4cfd..6905cc6 100644
--- a/GMStepperExample/GMStepperExample/Info.plist
+++ b/GMStepperExample/GMStepperExample/Info.plist
@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
-	<string>com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
diff --git a/GMStepperExample/GMStepperExample/ViewController.swift b/GMStepperExample/GMStepperExample/ViewController.swift
index de6a7d9..5439704 100644
--- a/GMStepperExample/GMStepperExample/ViewController.swift
+++ b/GMStepperExample/GMStepperExample/ViewController.swift
@@ -17,6 +17,6 @@ class ViewController: UIViewController {
     }
 
     func stepperValueChanged(stepper: GMStepper) {
-        print(stepper.value)
+        print(stepper.value, terminator: "")
     }
 }
diff --git a/GMStepperExample/GMStepperExampleTests/Info.plist b/GMStepperExample/GMStepperExampleTests/Info.plist
index cb7633c..ba72822 100644
--- a/GMStepperExample/GMStepperExampleTests/Info.plist
+++ b/GMStepperExample/GMStepperExampleTests/Info.plist
@@ -7,7 +7,7 @@
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
-	<string>com.gunaymert.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>