WIP: Update readme

README.md

@@ -1,2 +1,23 @@
-# birb
+# Birb
+
 Instagram for birds
+
+Birb is an open source [Flutter](https://flutter.io) app written as part the [A month of Flutter](https://bendyworks.com/blog/a-month-of-flutter) blog series.
+
+## Install
+
+Make sure you have [Flutter](https://flutter.io/docs/get-started/install) installed and either Android Emulator or iOS Simulator configured.
+
+Clone the birb repository:
+
+~~~bash
+git clone git@github.com:abraham/birb.git
+~~~
+
+Install the Flutter dependencies within the `app` directory:
+
+~~~bash
+flutter pub get
+~~~
+
+[Start the app](https://flutter.io/docs/get-started/test-drive).