Updated README to support AMD.

README.md

@@ -121,8 +121,6 @@ There are then **4 steps** that must be performed to go from an SCXML document t
         <script src="http://cdnjs.cloudflare.com/ajax/libs/es5-shim/1.2.4/es5-shim.min.js"></script>
         <script type="text/javascript" src="http://jbeard4.github.com/SCION/builds/latest/scion-min.js"></script>
         <script>
-            var scion = require('scion');
-
             $(document).ready(function(){
                 var rect = document.getElementById("rect");
 
@@ -223,20 +221,30 @@ Furthermore, for the `onTransition` callback, argument `targetStateIds` will be
 
 # Usage in Browser
 
-Add the following script tags to your web page:
+Add the following script tags to your web page, which will make SCION available as a global variable `scion`:
 
 ```html
 <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
 <script src="http://cdnjs.cloudflare.com/ajax/libs/es5-shim/1.2.4/es5-shim.min.js"></script>
 <script type="text/javascript" src="http://jbeard4.github.com/SCION/builds/latest/scion.js"></script>
 ```
 
+SCION is also available as an AMD module, so if you are using RequireJS in your page, then you can do the following:
+
+```html
+<script src="http://cdnjs.cloudflare.com/ajax/libs/es5-shim/1.2.4/es5-shim.min.js"></script>
+<script src="http://cdnjs.cloudflare.com/ajax/libs/require-jquery/0.25.0/require-jquery.min.js "></script>
+
+require(["http://jbeard4.github.com/SCION/builds/latest/scion-min.js"],function(scion){
+  //use SCION here
+});
+```
+
 Note that SCION assumes the presence of jQuery to handle cross-browser XMLHTTPRequest, however an alternative Ajax library could instead be used. This is set up in the following way:
 
 ```javascript
     //perform this setup once, before SCION is used
-    var platform = require('platform');
-    platform.ajax = {
+    scion.platformModule.platform.ajax = {
         get : function(url,successCallback,dataType){
             //call your preferred Ajax library here to do HTTP GET
             //if dataType is 'xml', the Ajax response must be parsed as DOM