iOS 内购支付两种模式
http://www.jianshu.com/p/15086493768a
http://blog.csdn.net/darling_shadow/article/details/51538267
http://blog.csdn.net/hdfqq188816190/article/details/53114737
http://blog.csdn.net/dingxiaowei2013/article/details/52988354
http://blog.csdn.net/qq15233635728/article/details/46326951
支付 模块=== 内购模块
http://www.jianshu.com/p/5b920a687c1e
[官]Technical Note TN2413 In-App Purchase FAQ
https://developer.apple.com/library/content/technotes/tn2413/_index.html
ios android 原生支持包括部分SDK插件
https://www.assetstore.unity3d.com/cn/#!/content/20152
iOS应用程序内购/内付费(一)
http://blog.csdn.net/shenjie12345678/article/details/40978977