Add initial demo application

.gitignore

.gitlab-ci.yml

.metadata

Dockerfile

Gemfile

Gemfile.lock

README.md

android-template.iml

android/.gitignore

android/app/build.gradle

android/app/src/debug/AndroidManifest.xml

android/app/src/main/AndroidManifest.xml

...src/main/java/org/benoitharrault/random/MainActivity.java

android/app/src/main/res/drawable-v21/launch_background.xml

android/app/src/main/res/drawable/launch_background.xml

android/app/src/main/res/mipmap-hdpi/ic_launcher.png

android/app/src/main/res/mipmap-mdpi/ic_launcher.png

android/app/src/main/res/mipmap-xhdpi/ic_launcher.png

android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png

android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png