//REST Client
http://square.github.io/retrofit/
http://www.vogella.com/tutorials/Retrofit/article.html#exercise-using-retrofit-to-access-github-api-in-android
http://square.github.io/okhttp/
https://github.com/franmontiel/PersistentCookieJar
//Event Bus
http://greenrobot.org/eventbus/
//Image Library
https://github.com/bumptech/glide
// Dependency Injection
http://square.github.io/dagger/
http://www.vogella.com/tutorials/Dagger/article.html
http://jakewharton.github.io/butterknife/
//RXAndroid
http://reactivex.io/
https://github.com/ReactiveX/RxJava/wiki
https://egghead.io/lessons/rxjs-understand-reactive-programming-using-rxjs
https://www.vokal.io/blog/reactive-forms-with-rxandroid
https://medium.com/crunching-rxandroid/crunching-rxandroid-part-6-6149764b59e
https://news.realm.io/news/donn-felker-reactive-android-ui-programming-with-rxbinding/
MVP
https://news.realm.io/news/eric-maxwell-mvc-mvp-and-mvvm-on-android/
MVP Kotin
https://github.com/ravidsrk/android-mvp-kotlin-starter