Merge pull request #13 from tacitknowledge/master

Add CommonJS and AMD support.

README.md

@@ -2,4 +2,17 @@
 
 What is it? A jQuery plugin from GSGD to give advanced easing options. More info [here](http://gsgd.co.uk/sandbox/jquery/easing)
 
-For CDN please use CloudFlare [`http://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js`](http://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js) to help my host. Thank you.
+For CDN please use CloudFlare [`http://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js`](http://cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js) to help my host. Thank you.
+
+# AMD or CommonJS usage
+
+```js
+// CommonJS
+var jQuery = require('jquery');
+require('jquery.easing')(jQuery);
+
+// AMD
+define(['jquery', 'jquery.easing'], function (jQuery, easing) {
+  easing(jQuery)
+})
+```

jquery.easing.js

@@ -7,7 +7,17 @@
 */
 
 // t: current time, b: begInnIng value, c: change In value, d: duration
-(function($){$.easing['jswing'] = $.easing['swing'];
+(function (factory) {
+	if (typeof define === "function" && define.amd) {
+		define(function () {
+			return factory;
+		});
+	} else if (typeof module === "object" && typeof module.exports === "object") {
+		exports = factory;
+	} else {
+		factory(jQuery);
+	}
+})(function($){$.easing['jswing'] = $.easing['swing'];
 
 $.extend( $.easing,
 {
@@ -140,4 +150,4 @@ $.extend( $.easing,
 		if (t < d/2) return $.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
 		return $.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
 	}
-});})(jQuery);
+});});