Removed img folder (should only exist in the gh-pages branch)
Updated version number to 0.7.0-SNAPSHOT
bugfix graphviz examples
removed this.pinch.mousewheelscale
Merge branch 'develop' of https://github.com/almende/vis into develop

Conflicts solved:
	HISTORY.md
	dist/vis.js
Updated physics for graphviz examples to make it more appealing. Very easy with the configurePhysics option.
added requestanimationframe
Removed some more files belonging in the gh-pages branch only
fixed label position for smooth curves as per #49
Merge branch 'develop' of https://github.com/almende/vis into develop
Updated documentation
Updated documentation on className
Merge remote-tracking branch 'origin/develop' into develop
Fixed a bug with margin.item=0 and margin.axis=0. Clarified some options in the documentation
Checking for existence of `window` before using it
Released version 0.6.1