Update README.md

Author: garyb

README.md

@@ -1,7 +1,16 @@
 # purescript-node-buffer
 
-Type declarations and FFI wrappers for Node's Buffer class.
+[![Latest release](http://img.shields.io/github/release/purescript-node/purescript-node-buffer.svg)](https://github.com/purescript-node/purescript-node-buffer/releases)
+[![Build Status](https://travis-ci.org/purescript-node/purescript-node-buffer.svg?branch=master)](https://travis-ci.org/purescript-node/purescript-node-buffer)
+
+Type declarations and FFI wrappers for Node's [Buffer API](https://nodejs.org/api/buffer.html).
+
+## Installation
+
+```
+bower install purescript-node-buffer
+```
 
 ## Documentation
 
-Module documentation is [published on Pursuit](https://pursuit.purescript.org/packages/purescript-node-buffer).
+Module documentation is [published on Pursuit](http://pursuit.purescript.org/packages/purescript-node-buffer).