Javascript support

[reaandrew]

We need to find the best library in order to support JavaScript.

v8worker by Ryan Dahl looks to be the best from a simplicity point of view and principles but it comes with this statement:

It's only been tested on my OSX laptop and x64 linux. Should be portable with some difficulty to windows.

So we have a job on it seems to make it support Windows. LETS double check this and compile on windows to check whether someone has committed this but not updated the documentation

This ticket is for a spike and to understand what to do now and next e.g.

Pure GO javascript library NOW
Update to V8 worker after

OR

Wait to implement JavaScript until public beta when we know how to handle