[real-world uses] Add iTrading

doc/realworld.html

@@ -94,6 +94,7 @@
       <li><a href="http://www.homegenie.it/docs/automation_getstarted.php">Homegenie</a> (home automation server)</li>
       <li><a href="http://icecoder.net">ICEcoder</a> (web IDE)</li>
       <li><a href="http://ipython.org/">IPython</a> (interactive computing shell)</li>
+      <li><a href="joelpinheiro.github.io/itrading/">iTrading</a> (Algorithmic Trading)</li>
       <li><a href="http://i-mos.org/imos/">i-MOS</a> (modeling and simulation platform)</li>
       <li><a href="http://www.janvas.com/">Janvas</a> (vector graphics editor)</li>
       <li><a href="http://extensions.joomla.org/extensions/edition/editors/8723">Joomla plugin</a></li>