docs(tutorial): update step_12.ngdoc

This time I feel good about this modification to the document, the code listing
on the tutorial page for the animation.js DID NOT match what was actually IN the
file for that branch.  Updated tutorial to reflect actual contents of file

Closes #5922

Author: matthewhintzen

docs/content/tutorial/step_12.ngdoc

@@ -340,45 +340,58 @@ Although we could do that, let's take the opportunity to learn how to create Jav
 
 __`app/js/animations.js`.__
 <pre>
-angular.module('phonecatAnimations', ['ngAnimate'])
-
-  .animation('.phone', function() {
-    return {
-      addClass : function(element, className, done) {
-        if(className != 'active') {
-          return;
-        }
-        element.css({
-          position: 'absolute',
-          top: 500,
-          left: 0,
-          display: 'block'
-        });
-        jQuery(element).animate({
-          top: 0
-        }, done);
-
-        return function(cancel) {
-          if(cancel) element.stop();
-        };
-      },
-      removeClass : function(element, className, done) {
-        if(className != 'active') return;
-        element.css({
-          position: 'absolute',
-          left: 0,
-          top: 0
-        });
-        jQuery(element).animate({
-          top: -500
-        }, done);
-
-        return function(cancel) {
-          if(cancel) element.stop();
-        };
+var phonecatAnimations = angular.module('phonecatAnimations', ['ngAnimate']);
+
+phonecatAnimations.animation('.phone', function() {
+
+  var animateUp = function(element, className, done) {
+    if(className != 'active') {
+      return;
+    }
+    element.css({
+      position: 'absolute',
+      top: 500,
+      left: 0,
+      display: 'block'
+    });
+
+    jQuery(element).animate({
+      top: 0
+    }, done);
+
+    return function(cancel) {
+      if(cancel) {
+        element.stop();
       }
     };
-  });
+  }
+
+  var animateDown = function(element, className, done) {
+    if(className != 'active') {
+      return;
+    }
+    element.css({
+      position: 'absolute',
+      left: 0,
+      top: 0
+    });
+
+    jQuery(element).animate({
+      top: -500
+    }, done);
+
+    return function(cancel) {
+      if(cancel) {
+        element.stop();
+      }
+    };
+  }
+
+  return {
+    addClass: animateUp,
+    removeClass: animateDown
+  };
+});
 </pre>
 
 Note that we're using {@link http://jquery.com/ jQuery} to implement the animation. jQuery