update version table

Author: tacaswell

versions.html

@@ -1,8 +1,8 @@
 Other versions are available:
 
 <ul>
-  <li><a href="/2.2.3/index.html">2.2.3</a> Stable version.</a></li>
-  <li><a href="/devdocs/index.html">2.x</a> Latest git master (unstable)</a></li>
-  <li><a href="/2.1.2/index.html">2.1.2</a> Previous stable version.</a></li>
-  <li><a href="/2.0.2/index.html">2.0.2</a> Older stable version.</a></li>
+  <li><a href="/3.0.0/index.html">3.0.0</a> Stable version.</a></li>
+  <li><a href="/2.2.3/index.html">2.2.3 LTS</a> LTS version.</a></li>
+  <li><a href="/devdocs/index.html">3.x</a> Latest git master (unstable)</a></li>
+  <li><a href="/2.1.2/index.html">2.1.2</a> Older stable version.</a></li>
 </ul>