added codecov to travis

.travis.yml

@@ -1,9 +1,15 @@
 language: objective-c
-osx_image: xcode7
+osx_image: xcode7.1
 
 before_install:
-  - gem install cocoapods --no-rdoc --no-ri --no-document --quiet
+
+  - gem install xcpretty --no-rdoc --no-ri --no-document --quiet
 
 script:
-  - xctool -project Validator.xcodeproj -scheme Validator -sdk iphonesimulator9.0 build test
-  - pod lib lint
+
+  - pod lib lint
+  - xcodebuild clean build test -project Validator.xcodeproj -scheme Validator -sdk iphonesimulator9.1 -destination "OS=9.1,name=iPhone 6" -enableCodeCoverage YES | xcpretty
+
+after_success:
+
+  - bash <(curl -s https://codecov.io/bash)