Fix typo and code comments for IE conditional.

@@ -73,7 +73,7 @@
         if (window.addEventListener) {
           return this.el.addEventListener('change', this.publish);
         } else {
-          return this.el.attatchEvent('change', this.publish);
+          return this.el.attachEvent('change', this.publish);
         }
       }
     };

@@ -56,13 +56,12 @@ class Rivets.Binding
       @set Rivets.config.adapter.read @model, @keypath
 
     if @type in bidirectionals
-
-      #Check to see if addEventListener is available
+      # Check to see if addEventListener is available.
       if window.addEventListener
         @el.addEventListener 'change', @publish
       else
-      # Assume we are in IE and attach the event
-        @el.attatchEvent 'change', @publish
+      # Assume we are in IE and use attachEvent.
+        @el.attachEvent 'change', @publish
 
   # Publishes the value currently set on the input element back to the model.
   publish: (e) =>