made messageType a readwrite property, refactored init methods
Merge pull request #14 from eliburke/modified_messageType

made messageType a readwrite property, refactored init methods
bump tag version
Merge branch 'master' of github.com:huffpostlabs/HPLChatViewController

* 'master' of github.com:huffpostlabs/HPLChatViewController:
  made messageType a readwrite property, refactored init methods
  Removed use of getText in exchange for the new property, text.
  Update README.md
Change authors to contributors list
update README
changed the default background bubbleView to be clear instead of white
modified the Copy menu to only show for supported contents (UILabel, Image,
ImageView)
added an appendMethod to add new chat data without reloading the entire table
Added indexPath to ChatData so we can call UITableView:reloadRowsAtIndexPaths
Changed groupInterval to a >= comparison so that an interval of 0 will not
group, ever.