Merge branch 'develop' of github.com:kzaher/RxSwift into develop

Documentation/MathBehindRx.md

@@ -3,19 +3,17 @@ Math Behind Rx
 
 ## Duality between Observer and Iterator / Enumerator / Generator / Sequences
 
-There is a duality between observer and generator pattern. That's what enables transition from async callback world to synchronous world of sequence transformations.
+There is a duality between the observer and generator patterns. This is what enables us to transition from the async callback world to synchronous world of sequence transformations.
 
-In short, enumerator and observer pattern both describe sequences. It's pretty obvious why does enumerator defined sequence, but what about observer.
+In short, the enumerator and observer patterns both describe sequences. It's fairly obvious why the  enumerator defines a sequence, but the observer is slightly more complicated.
 
-There is also a pretty simple explanation that doesn't include a lot of math. Assume that you are observing mouse movements. Every received mouse movement is an element of a sequence of mouse movements over time.
+There is, however, a pretty simple example that doesn't require a lot of mathematical knowledge. Assume that you are observing the position of your mouse cursor on screen at given time periods. Over time, these mouse positions form a sequence. This is, in essence, an observer sequence.
 
-In short, there are two basic ways elements of a sequence can be accessed.
+There are two basic ways elements of a sequence can be accessed:
 
 * Push interface - Observer (observed elements over time make a sequence)
 * Pull interface - Iterator / Enumerator / Generator
 
-To learn more about this, these videos should help
-
-You can also see a more formal explanation explained in a fun way in this video:
+You can also see a more formal explanation in this video:
 
 [Expert to Expert: Brian Beckman and Erik Meijer - Inside the .NET Reactive Framework (Rx) (video)](https://www.youtube.com/watch?v=looJcaeboBY)

RxCocoa/iOS/UIApplication+Rx.swift

@@ -10,11 +10,11 @@ import Foundation
 
 #if os(iOS)
     import UIKit
-    
+
 #if !RX_NO_MODULE
     import RxSwift
 #endif
-    
+
     extension UIApplication {
         
         /**
@@ -26,4 +26,5 @@ import Foundation
             }.asObserver()
         }
     }
-#endif
+#endif
+

RxExample/RxExample/Examples/SimpleValidation/SimpleValidationViewController.swift

@@ -30,7 +30,7 @@ class SimpleValidationViewController : ViewController {
         super.viewDidLoad()
 
         usernameValidOutlet.text = "Username has to be at least \(minimalUsernameLength) characters"
-        passwordValidOutlet.text = "Username has to be at least \(minimalPasswordLength) characters"
+        passwordValidOutlet.text = "Password has to be at least \(minimalPasswordLength) characters"
 
         let usernameValid = usernameOutlet.rx_text
             .map { $0.characters.count >= minimalUsernameLength }