Wait for a widget's 'load' message to set the widget size and to set the state to ready. Fixed CSS prefixing helper to actually work. Removed unused widget data attrs.
Updated grunt-mocha
Moved unit-tests requireJS under sinon.js include to avoid sinon.js thinking it has to be loaded via requirejs.
Merge pull request #3 from plyfe/widget-load-sizing

Size widget div on widget load [RELEASE AS v0.5.0]