Add README.md and LICENSE

README.md

+# FreshRSS Android application
+
+Finally, an Android application specifically dedicated to the awesome [FreshRSS aggregator](https://freshrss.org/)
+
+## Getting started
+
+This project is a fairly standard Android application. As long as you use an correct setup of [Android studio](https://developer.android.com/studio/), 
+everything should be fine.
+
+## Running the tests
+
+This project has no tests yet ¯\_(ツ)_/¯
+There is an issue [about setting them up](https://git.feneas.org/christophehenry/freshrss-android/issues/16), 
+though, as well as one for [setting up a CI](https://git.feneas.org/christophehenry/freshrss-android/issues/17)
+
+## Contributing
+
+As stated, this is a fairly standard Android project. There are a few things to know, though, before contributing...
+
+1. This project is a pure Kotlin project. No Java will be tolerated. 
+The original author is highly allergic to Java and was very happy to see the Android team embrace Kotlin. 
+Since Kotlin is becoming the standard to develop Android applications 
+(Android's support library are being rewritten in Kotlin, Jetpack — the Android library for rapid application development — 
+is also written in Kotlin, and examples in Android's documentation show Kotlin code by default), this project adopted Kotlin.
+
+2. It also heavily relies on [Jetpack](https://developer.android.com/jetpack/), the Android's rapid application development library. 
+In particular, it uses:
+  * [JP's data binding](https://developer.android.com/topic/libraries/data-binding/)
+  * [`LiveData` classes](https://developer.android.com/topic/libraries/architecture/livedata)
+  * [Navigation](https://developer.android.com/topic/libraries/architecture/navigation/)
+  * [Room persistence library](https://developer.android.com/topic/libraries/architecture/room) for database interaction,
+  * [`ViewModel`s](https://developer.android.com/topic/libraries/architecture/viewmodel)
+It would be advised to read [Android's guid to app architecture](https://developer.android.com/jetpack/docs/guide)
+
+3. It uses [Kovenent](http://kovenant.komponents.nl/), as Kotlin promise library to perform async operations.
+
+4. It uses [Fuel](https://fuel.gitbook.io/documentation/) for HTTP requests.
+
+5. You can debug your application using [Facebook's Stetho](http://facebook.github.io/stetho/).
+
+6. Serialization and deserialization of HTTP request is handled by [Kotlinx serialization library](https://github.com/Kotlin/kotlinx.serialization/blob/master/README.md#kotlin-cross-platform--multi-format-reflectionless-serialization). 
+(Might be an idea to move to [`fuel-livedata`](https://fuel.gitbook.io/documentation/support/fuel-livedata) in the future. Requires digging.)
+
+## License
+
+This project is licenced under GNU GPL v.3. See [LICENSE](https://git.feneas.org/christophehenry/freshrss-android/blob/develop/LICENSE).
+
+## Aknowledgments
+
+Thanks to [Marien Fressinaud](https://github.com/marienfressinaud), 
+[Alexandre Alapetite](https://github.com/Alkarex) and all the FreshRSS contributors for their awesome work. 
+And thanks again to Alexandre for helping in understanding their implementation of Google reader's API.