branch io
https://dev.branch.io/getting-started/link-behavior/guide/
https://github.com/BranchMetrics/branch-deep-linking-public-api
android、iOS URI schema
http://blog.csdn.net/goldenfish1919/article/details/40540613
http://trendlineinteractive.com/2011/09/launching-ios-apps-from-an-email-newsletter/
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http://skookum.com/blog/open-an-ios-app-from-an-email
https://developer.android.com/training/app-indexing/deep-linking.html