Merge branch 'feature/get-app-properties' into dev

Author: ericmgoeken

android/src/main/java/com/hudl/oss/react/fragment/ReactFragment.java

@@ -198,6 +198,9 @@ public void setAppProperties(Bundle appProperties){
      * Helper to get props passed to the React Native Component 
      */
     public Bundle getAppProperties(){
+        if( mReactRootView==null) {
+            return null;
+        }
         return mReactRootView.getAppProperties();
     }