[FEATURE] fix export and add more documentation

README.md

@@ -32,6 +32,18 @@ const fs = require('fs');
 
 ```
 
+#### Usage in Sass
+
+Given you have an icon called ```icon-trash.svg```
+
+```scss
+@import 'svg';
+
+.a-button--delete {
+    @include inline-svg($icon-trash);
+}
+```
+
 ### Configuration
 
 #### Use your own template

index.js

@@ -6,7 +6,7 @@ const globby = require('globby');
 const _ = require('underscore');
 const util = require('util');
 
-class InlineSvg {
+module.exports = class InlineSvg {
 	
 	/**
 	 * Kick things off