added notes for Cordova 4 and WKWebView

Author: Hirbod

README.md

@@ -35,7 +35,7 @@ $> cordova plugin add cordova-plugin-googlemaps --variable API_KEY_FOR_ANDROID="
 The SDK-Plugin won't be uninstalled automatically and you will stuck on an old version.
 
 ###WARNING
-This plugin is not compatible with Cordova-iOS 4.0.0. WKWebView is not supported. They have been huge changes in the API, and due to lack of time, there is no ETA when this plugin will be compatible. PRs are welcome!!
+Cordova-iOS 4.X and WKWebView are supported from version 1.4+. There is currently no npm package of 1.4 (work in progress) but if you need this feature, you can grab our master, which is currently considered stable. (We're still fixing bugs, so you might wait until we push 1.4.0 to npm)
 
 ###Last release information