Add Clarence compiler

Hello dear,

I‘ve been working for a longer time on a clojure-ish Compiler built on top of JS. It is called Clarence and you will find it [here](http://github.com/clarence-lang/clarence). it is written and maintained by me (timo-cmd) and by Max Base. I‘d consider, you could add the Clarence compiler to the serious projects, whereas Clarence is now aiming towards the linguist index.

I enjoy your awesome lists really. I follow you and wish you success.

Thanks and regards

Timo S.