Support other languages

Hi,
I used LiveScript and CoffeeScript with XMLHttpRequest and they could not work, because they are not exectued by node.

https://github.com/gkz/LiveScript/blob/master/bin/lsc
https://github.com/jashkenas/coffeescript/blob/master/bin/coffee

You can see that they execute node via '/usr/bin/evn', so I do some change in your code for fix this problem.

Thanks & Regards.
Rick.