Updated iOS 6 adoption rate URL in README
Merge pull request #420 from ranunez/master

Updated iOS 6 adoption rate URL in README
add support for an additional top content inset. close #325
update demo to have a “first received” message. ref #413
new APIs for responding to different cell tap events. issue #374. update demo.
update version nums
Merge commit 'bbecf44390cf792cfe2161ea442c89451e667f5c' into media

Conflicts:
	JSQMessagesViewController/Controllers/JSQMessagesViewController.m
	JSQMessagesViewController/Views/JSQMessagesCollectionView.h
	JSQMessagesViewController/Views/JSQMessagesCollectionViewCell.h