Mobile app initial implementation.

Closes #3 (closed)

README.md

-# Mobile App
+# Vereign mobile application.
 
+## Application flavors
+### Build application in debug mode
+- With development flavor `flutter run --flavor development -t lib/main-dev.dart`
+- With production flavor `flutter run --flavor production -t lib/main.dart`
+
+
+## Flutter Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+
+- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.dev/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.