removing the ol' upgrading section from the docs.

index.html

@@ -392,20 +392,6 @@
       <a href="http://jquery.com">jQuery</a> <small>( > 1.4.2)</small> or 
       <a href="http://zeptojs.com/">Zepto</a>.
     </p>
-    
-    <h2 id="Upgrading">Upgrading to 0.5.0+</h2>
-
-    <p>
-      We've taken the opportunity to clarify some naming with the <b>0.5.0</b>
-      release. <tt>Controller</tt> is now <a href="#Router">Router</a>, and 
-      <tt>refresh</tt> is now <a href="#Collection-reset">reset</a>. 
-      The previous <tt>saveLocation</tt> and <tt>setLocation</tt>
-      functions have been replaced by <a href="#Router-navigate">navigate</a>. 
-      <tt>Backbone.sync</tt>'s method signature has changed to allow the passing
-      of arbitrary options to <tt>jQuery.ajax</tt>.
-      Be sure to <a href="#History-start">opt-in</a> to <tt>pushState</tt> support, 
-      if you want to use it.
-    </p>
 
     <h2 id="Introduction">Introduction</h2>