Add instructions to build minified and unminified versions

Author: JustinPealing

README.md

@@ -57,3 +57,11 @@ Should work just fine in any modern browser. Tested in Chrome, Firefox and IE9+.
 ## Icons
 
 The icons used are adapted from the Fat Cow "Farm Fresh" web icons pack, which can be found at (http://www.fatcow.com/free-icons).
+
+## Building
+
+Run the following commands to output minified and unminified versions (on Windows):
+
+    npm run webpack
+    set NODE_ENV=production
+    npm run webpack