make avatars optional and off by default
add option to prevent scrolling to the bottom while the user is scrolling
Add subtitle support to put names under bubles or whatever
update documentation to reflect changes
bump version
Merge pull request #1 from alecgorge/master

Pull alecgorge's changes for avatar and subtitle
CellID needs to also take into account the subtitle visibility.
Add support for custom background bubble images.
Add support for custom text colors on a per row basis.
Merge branch 'custom-background-images'

Conflicts:
	JSMessagesTableViewController/JSBubbleMessageCell.h
	JSMessagesTableViewController/JSMessagesViewController.h
	JSMessagesTableViewController/JSMessagesViewController.m