Include badges & pursuit link in readme

Author: garyb

README.md

@@ -1,2 +1,17 @@
 # purescript-avar
-Low-level interface for asynchronous variables
+
+[![Latest release](http://img.shields.io/github/release/slamdata/purescript-avar.svg)](https://github.com/slamdata/purescript-avar/releases)
+[![Build status](https://travis-ci.org/slamdata/purescript-avar.svg?branch=master)](https://travis-ci.org/slamdata/purescript-avar)
+
+Low-level interface for asynchronous variables.
+
+## Installation
+
+```
+bower install purescript-avar
+```
+
+## Documentation
+
+Module documentation is [published on Pursuit](http://pursuit.purescript.org/packages/purescript-avar).
+