[real-world uses] Add Adnuntius

Author: antosarho

doc/realworld.html

@@ -26,6 +26,7 @@ <h2>CodeMirror real-world uses</h2>
 
     <ul>
       <li><a href="http://brackets.io">Adobe Brackets</a> (code editor)</li>
+      <li><a href="http://adnuntius.com">Adnuntius</a> (used for in-browser code editing and version history)</li>
       <li><a href="http://alm.tools">ALM Tools</a> (TypeScript powered IDE)</li>
       <li><a href="http://amber-lang.net/">Amber</a> (JavaScript-based Smalltalk system)</li>
       <li><a href="http://apeye.org/">APEye</a> (tool for testing &amp; documenting APIs)</li>