1.AB包学习资料
http://www.unitymanual.com/4094.html
http://blog.csdn.net/janeky/article/details/17652021
http://www.cnblogs.com/realtimepixels/p/3652128.html
http://blog.csdn.net/awnuxcvbn/article/details/9155307
http://blog.csdn.net/ox_thedarkness/article/details/9197453
需要解决的问题
1.如果创建AB包
2.AB的下载,加载
3.AB包的依赖关系
4.内存的问题