@amitosh, the posts array seems to have chronological order, but they are grouped social application wise, ie, like now, the latest post is on facebook, so all post of facebook have appeared in a right order, and then the post of twitter is there in correct order.

You might like to sort the posts array after it containing all posts and before it is being displayed through HTML. You can do it by simply creating a sort function or if you want to experiment more, you can create a custom sort filter.

Just saw, it is WIP PR :p . Hope above points can help you.