Merge pull request galaxykate#1 from dariusk/patch-1

Update README.md

README.md

@@ -2,3 +2,33 @@
 Tracery: a story-grammar generation library for javascript
 
 This is my attempt to package up [Tracery](https://github.com/galaxykate/tracery/) as a Node library.
+
+## Installation
+
+This is not hosted on [npmjs.org](http://npmjs.org) but you can install any node module directly from a Github repository using npm on the command line:
+
+```bash
+$ npm install v21/tracery --save
+```
+
+## Example usage
+
+```javascript
+var tracery = require('tracery-grammar');
+
+var grammar = tracery.createGrammar({
+  'animal': ['panda','fox','capybara','iguana'],
+  'emotion': ['sad','happy','angry','jealous'],
+  'origin':['I am #emotion.a# #animal#.'],
+});
+
+console.log(grammar.flatten('#origin#'));
+```
+
+Sample output:
+
+```plaintext
+I am a happy iguana.
+I am an angry fox.
+I am a sad capybara.
+```