Added webgl support in preferences.
Added webgl support in preferences.

trueinteractions/tint,Ivshti/node-webkit,Ivshti/node-webkit,trevorlinton/tint,trevorlinton/tint,trevorlinton/tint,trueinteractions/tint,trueinteractions/tint,trueinteractions/tint,trevorlinton/tint,Ivshti/node-webkit,trueinteractions/tint,Ivshti/node-webkit,trueinteractions/tint,Ivshti/node-webkit,Ivshti/node-webkit,trevorlinton/tint,trevorlinton/tint,trueinteractions/tint