Allow developer to specify output location for css / coffeescript files.

I changed the `UseCompiledFolder` property of MarginBase, LessMargin, and CoffeeScriptMargin to be a string so that the developer can specify where to output compiled css (and coffeescript files).

I also added one to the version number to get the vsix to overwrite existing install.. I don't know if that matters (you would have seen it anyway, I'm sure)..

It works great on my machine! :-P

Thanks for a great extension!