工具箱下载
https://github.com/rasmusbergpalm/DeepLearnToolbox
CNN_demo代码解析
http://blog.csdn.net/zouxy09/article/details/9993743/
http://www.cnblogs.com/nsnow/p/4562363.html
(1)前向传播
(2)反向传播
(3)测试