requirejs 学习案例

##参考资料 http://www.cnblogs.com/snandy/archive/2012/05/22/2513652.html http://www.cnblogs.com/snandy/archive/2012/05/23/2513712.html http://www.cnblogs.com/snandy/archive/2012/05/24/2514700.html http://www.cnblogs.com/snandy/archive/2012/06/06/2536969.html http://www.cnblogs.com/snandy/archive/2012/06/07/2537477.html http://www.cnblogs.com/snandy/archive/2012/06/08/2538001.html