change overall release names

Author: hyperthunk

_layouts/changes.html

@@ -22,7 +22,7 @@
           <div data-spy="affix" data-offset-bottom="290">
             <ul class="nav nav-list sidenav">
                 <li>
-                    <h4>Beta 1 (29 May 2014)</h4>
+                    <h4>Beta 2 (29 May 2014)</h4>
                     <ul>
                         <li><a href="/changelog/dpp-0.1.0.html">distributed-process-platform-0.1.0</a></li>
                         <li><a href="/changelog/dp-0.5.0.html">distributed-process-0.5.0</a></li>
@@ -32,7 +32,7 @@ <h4>Beta 1 (29 May 2014)</h4>
                     </ul>
                 </li>
                 <li>
-                    <h4>Preview 1 (27 Jan 2013)</h4>
+                    <h4>Beta 1 (27 Jan 2013)</h4>
                     <ul>
                         <li><a href="/changelog/dp-0.4.1.html">distributed-process-0.4.1</a></li>
                         <li><a href="/changelog/dp-0.4.2.html">distributed-process-0.4.2</a></li>