[real-world uses] Add boson editor

Author: isdampe

doc/realworld.html

@@ -33,6 +33,7 @@ <h2>CodeMirror real-world uses</h2>
       <li><a href="http://blog.bitbucket.org/2013/05/14/edit-your-code-in-the-cloud-with-bitbucket/">Bitbucket</a> (code hosting)</li>
       <li><a href="http://buzz.blogger.com/2013/04/improvements-to-blogger-template-html.html">Blogger's template editor</a></li>
       <li><a href="http://bluegriffon.org/">BlueGriffon</a> (HTML editor)</li>
+      <li><a href="https://github.com/isdampe/BosonEditorExperimental">Boson Editor</a> (code editor)</li>
       <li><a href="http://cargocollective.com/">Cargo Collective</a> (creative publishing platform)</li>
       <li><a href="https://developers.google.com/chrome-developer-tools/">Chrome DevTools</a></li>
       <li><a href="http://clickhelp.co/">ClickHelp</a> (technical writing tool)</li>