[ci skip] Update versions

Author: mxcl

README.markdown

@@ -5,15 +5,15 @@ This project adds promises to Apple’s MapKit framework.
 ## CocoaPods
 
 ```ruby
-pod "PromiseKit/MapKit", "~> 4.0"
+pod "PromiseKit/MapKit", "~> 6.0"
 ```
 
 The extensions are built into `PromiseKit.framework` thus nothing else is needed.
 
 ## Carthage
 
 ```ruby
-github "PromiseKit/MapKit" ~> 1.0
+github "PromiseKit/MapKit" ~> 3.0
 ```
 
 The extensions are built into their own framework: