FIXED: bug in DOM's NamedNodeMap that meant .length could easily crash, or return incorrect values. Also added an Assert to NamedNodeMap.item: which is broken/unfixable, needs the class redesigning.
ADDED: code to do a fully legal export of validating SVG files direct from the in-memory representation (tested: works. You can modify the SVG, write it back to disk, reload it)
FIXED: several minor issues in the DOM implementation that blocked adding this feature
IMPROVED: [SVGKImage imageNamed:] will now search the app/user's Documents directory as well as the bundle, making it extremely useful for apps that allow user-edited SVG files
ADDED: additional help article to README
FIXED: fill-opacity being ignored when no fill specified (fixed #115)
Merge remote-tracking branch 'svgkitmain/1.x' into osx/inital

Conflicts:
	SVGKit-iOS.xcodeproj/project.pbxproj
Merge branch 'osx/inital' into osx/demo