Fix global constraint application
Update Vec3.create, BoxConstraint naming
Add PlaneConstraint
Cleanup of constraint naming, creation
Add AxisConstraint
Add Optional AxisConstraint to cloth example
Update chain example pins
0.3.0
Merge branch 'master' into gh-pages

Conflicts:
	.jshintrc
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	.jshintrc
0.3.0