Add dusansimic.js.org

There is reasonable content on the page (see: [dušan
simić](https://dusansimic.github.io))
I have read and accepted the [ToS](http://dns.js.org/terms.html)

cnames_active.js

@@ -274,6 +274,7 @@ var cnames_active = {
   "dualcyclone": "dualcyclone.github.io/postit-todo-react-redux",
   "duffn": "duffn.github.io", // noCF? (don´t add this in a new PR)
   "dunedin": "dunedinjs.github.io",
+  "dusansimic": "dusansimic.github.io", // noCF
   "dutchakdev": "dutchakdev.github.io", // noCF? (don´t add this in a new PR)
   "dynamicsnode": "crisfervil.github.io/DynamicsNode",
   "eahmed234": "eahmed234.github.io",