Fix to the cusp ide link

Separate commit since this is a stylistic fix.

The original link was broken and I thought it better to provide the link
to the most up-to-date source code.

Author: Christopher Carpenter

env/ide.html

@@ -11,7 +11,7 @@ <h2 id="open-source">Open Source</h2>
   <li><p><a href="http://www.gnu.org/software/emacs/">emacs/SLIME</a> - Maintained. <a href="emacs-setup.html">Articulate-Lisp emacs article</a></p></li>
   <li><p><a href="http://www.vim.org/scripts/script.php?script_id=2531">vim/SLIME</a> - Maintained.</p></li>
   <li><p><a href="http://www.cliki.net/MCLIDE">McClide</a> (OSX) - Maintained.</p></li>
-  <li><p><a href="http://bitfauna.com/projects/cusp/">Cusp/Eclipse</a> - Unmaintained. <a href="cusp-setup.html">Articulate-Lisp cusp article</a></p></li>
+  <li><p><a href="https://bitbucket.org/skolos/lispdev/overview">Cusp/Eclipse</a> - Unmaintained. <a href="cusp-setup.html">Articulate-Lisp cusp article</a></p></li>
   <li><p><a href="http://ufasoft.com/lisp/">Ufasoft</a> (Windows) - Unmaintained.</p></li>
 </ul>
 <h2 id="non-open-source">Non-open source</h2>