Allow reactinstancemanager to set an initialization function

Reviewed By: javache

Differential Revision: D5227811

fbshipit-source-id: e7868481de2a8799af5d6a6bcad26369d054b35e

ReactAndroid/src/main/java/com/facebook/react/module/processing/ReactModuleSpecProcessor.java

@@ -88,6 +88,7 @@ public class ReactModuleSpecProcessor extends AbstractProcessor {
 
       TypeElement typeElement = (TypeElement) reactModuleListElement;
       ReactModuleList reactModuleList = typeElement.getAnnotation(ReactModuleList.class);
+
       if (reactModuleList == null) {
         continue;
       }