Fixed error 'java.lang.ClassCastException:  cannot be cast to android.view.WindowManagerImpl' on Android when using native alert dialogs, updated README.md with Xcode version required

updated ConsoleMessage class, updated evaluateJavascript method, fixed Android JavaScriptBridgeInterface _callHandler method

fixed ajax interceptor javascript code, re-added flutterInAppBrowserPlatformReady javascript for the window object, tests moved inside example folder using flutter driver

origin

fixed shouldInterceptRequest String url Android, added initial tests using custom classes and functions

upgrade origin

updated AjaxRequest class, fixed 'InvalidStateError' ajax error #189, No need to listen to window.addEventListener(flutterInAppBrowserPlatformReady, fuction(){ }) javascript event anymore to use JaaScript message handlers

add initialScale in android