minor doc updates to inform user they need the current less.js 1.2.1 or they will be hit by this bug #952

docs/less.html

@@ -431,7 +431,7 @@
     <p>Use this option to make full use of Bootstrap’s Less variables, mixins, and nesting in CSS via javascript in your browser.</p>
 <pre class="prettyprint linenums">
 &lt;link rel="stylesheet/less" href="less/bootstrap.less" media="all" /&gt;
-&lt;script src="js/less-1.1.3.min.js"&gt;&lt;/script&gt;</pre>
+&lt;script src="js/less-1.2.1.min.js"&gt;&lt;/script&gt;</pre>
 <p>Not feeling the .js solution? <a href="http://incident57.com/less" target="_blank">Try the Less Mac app</a> or <a href="http://lesscss.org/#-client-side-usage" target="_blank">use Node.js</a> to compile when you deploy your code.</p>
 
     <h2>What’s included</h2>

docs/upgrading.html

@@ -135,6 +135,12 @@
       <li>Pills now have dropdown menu support (they share the same markup and styles as tabs)</li>
     </ul>
   </li>
+  <li>Update Less.js
+    <ul>
+      <li>Make sure to use to the current release of <a href="http://lesscss.org/">less.js</a> </li>
+    </ul>
+  </li>
+      
 </ul>
 <!--
   <li>