only define as a requirejs module when define.amd is present

Author: jakesgordon

state-machine.js

@@ -203,7 +203,7 @@
   //============
   // AMD/REQUIRE
   //============
-  else if (typeof define === 'function') {
+  else if (typeof define === 'function' && define.amd) {
     define(function(require) { return StateMachine; });
   }
   //========

state-machine.min.js

@@ -6,13 +6,11 @@
   <script src="../qunit/qunit.js"></script>
   <script src="require.js"></script>
   <script>
-    require(["../../state-machine.js"], function(RequiredStateMachine) {
+    require(["../../state-machine.js"], function(StateMachine) {
 
-      module("require.js");
+      test("state machine included using require.js", function() {
 
-      test("state machine included using require.js with custom name", function() {
-
-        var fsm = RequiredStateMachine.create({
+        var fsm = StateMachine.create({
           initial: 'green',
           events: [
             { name: 'warn',  from: 'green',  to: 'yellow' },