Support react-native > 0.40 (#437)

* Support react-native > 0.40

* Bumping major version. Breaking change.

* Upgrade example project from 0.33 => 0.40.

example/android/app/build.gradle

@@ -135,6 +135,6 @@ dependencies {
 // Run this once to be able to run the application with BUCK
 // puts all compile dependencies into folder libs for BUCK to use
 task copyDownloadableDepsToLibs(type: Copy) {
-  from configurations.compile
-  into 'libs'
+    from configurations.compile
+    into 'libs'
 }