added free jquery and ember study course on Tut+. Added codeschool site to guides

jquery and ember is a free Tut+ Premium course
Code School teaches web technologies in the comfort of your browser with video lessons, coding challenges, and screencasts.Ruby, RoR, Rspec, JS, Backbone.js, Node.js, jQuery, HTML5, CSS3, iOS
Merge pull request #120 from Wallsays/master

added jquery and ember study course on Tut+, codeschool site to guides