Added support for ItemAnimator
By replacing “notifyDataSetChanged()” to “notifyItemInserted()”
[adapter] Added few List methods
isEmpty(), size()
Also getObjects() to have a copy of the list currently in this adapter
[simple_adapter] Fixed parameter name
It’s not about the position, but about the view type into 
getViewHolderClass()
Merge pull request #4 from preplay/master

Few improvements