updates README

Author: kritzcreek

README.md

@@ -1,16 +1,18 @@
-# purescript-maps
+# purescript-ordered-collections
 
-[![Latest release](http://img.shields.io/github/release/purescript/purescript-maps.svg)](https://github.com/purescript/purescript-maps/releases)
-[![Build status](https://travis-ci.org/purescript/purescript-maps.svg?branch=master)](https://travis-ci.org/purescript/purescript-maps)
+[![Latest release](http://img.shields.io/github/release/purescript/purescript-ordered-collections.svg)](https://github.com/purescript/purescript-ordered-collections/releases)
+[![Build status](https://travis-ci.org/purescript/purescript-ordered-collections.svg?branch=master)](https://travis-ci.org/purescript/purescript-ordered-collections)
 
-Purely-functional map data structures.
+Purely-functional map and set data structures.
 
 ## Installation
 
 ```
-bower install purescript-maps
+bower install purescript-ordered-collections
+# or
+psc-package install ordered-collections
 ```
 
 ## Documentation
 
-Module documentation is [published on Pursuit](http://pursuit.purescript.org/packages/purescript-maps).
+Module documentation is [published on Pursuit](http://pursuit.purescript.org/packages/purescript-ordered-collections).