[real-world uses] Add Projects IDE

doc/realworld.html

@@ -99,6 +99,7 @@
       <li><a href="https://github.com/mamacdon/orion-codemirror">Orion-CodeMirror integration</a> (running CodeMirror modes in Orion)</li>
       <li><a href="http://paperjs.org/">Paper.js</a> (graphics scripting)</li>
       <li><a href="http://prinbit.com/">PrinBit</a> (collaborative coding tool)</li>
+      <li><a href="http://projects.parmleyhunt.com/">Projects</a> (experimental IDE)</li>
       <li><a href="http://prose.io/">Prose.io</a> (github content editor)</li>
       <li><a href="http://www.puzzlescript.net/">Puzzlescript</a> (puzzle game engine)</li>
       <li><a href="http://ql.io/">ql.io</a> (http API query helper)</li>