modify the horizontal padding for iOS7
Remove logs
added delegate callback for `textView:shouldChangeTextInRange:replacementText:`
expose method to update text view and force height update when inserting text programatically
Merge commit '894547081ef3a9595e74222cec2b8b68e4a3209f'

* commit '894547081ef3a9595e74222cec2b8b68e4a3209f':
  passing the UITextView delegate to the controller

Conflicts:
	ACEExpandableTextCell/ACEExpandableTextCell.m
Merge branch 'master' of https://github.com/milqfm/ACEExpandableTextCell
Merge branch 'master' of https://github.com/MaxZeng/ACEExpandableTextCell