Added image size
Merge branch 'master' into image_size

Conflicts:
	src/core/LiterallyCanvas.coffee
	src/core/util.coffee
Fixed crash when imageSize isn't present
Updated getBoundingRect calls to be more sane
Handle imageBounds option a little more cleanly
Fixed centering when canvas is resized
Merge pull request #181 from campaul/image_size

Added image size