Small fix to UMD wrapper

bower.json

@@ -1,7 +1,7 @@
 {
   "name": "Springy",
   "main": "springy.js",
-  "version": "2.7.0",
+  "version": "2.7.1",
   "homepage": "https://github.com/dhotson/springy",
   "authors": [
     "Dennis Hotson <dennis@99designs.com>"

package.json

@@ -1,6 +1,6 @@
 {
   "name": "springy",
-  "version": "2.7.0",
+  "version": "2.7.1",
   "description": "A force directed graph layout algorithm in JavaScript.",
   "main": "springy.js",
   "scripts": {

springy.js

@@ -1,5 +1,5 @@
 /**
- * Springy v2.7.0
+ * Springy v2.7.1
  *
  * Copyright (c) 2010-2013 Dennis Hotson
  *
@@ -27,7 +27,7 @@
 (function (root, factory) {
     if (typeof define === 'function' && define.amd) {
         // AMD. Register as an anonymous module.
-        define(['b'], function (b) {
+        define(function () {
             return (root.returnExportsGlobal = factory());
         });
     } else if (typeof exports === 'object') {