Predefine the SVGKSource class in SVGKImageRep's header, so we don't need SVGKImage's header guards.
Remove SVGKImage's header guards.
Fix spelling mistake.
Add asynchronous parsing to SVGKParser, as well as having a delegate that gets called when parsing is complete, either in the asynchronous or synchronous call.
Add a (commented out) tester for SVGKParser's asynchronous methods in OS X's Views demo.
Change id<protocol> to NSObject<protocol>* on the sVGKParser.
Merge branch 'master' into arc

Conflicts:
	Source/Parsers/SVGKParser.h
	Source/Parsers/SVGKParser.m