Added twitter bootstrap,simple validation and back button.
added twitter/bootstrap, simple back button and validation
Merge branch 'week5' of https://github.com/entzo/sexy-js into week5

Conflicts:
	quiz.js
added event handler object for ie8 / ie9 support...
Moved questions to a .json file. quiz.js access it w/ajax.
added user prompt and cookie/localstorage for saved username and score