Removal of delimiters and support for partials

Hi,

The handlebars delimiters resulted in unexpected behavior after testing with more complex handlebar templates. Therefore I have removed this functionality.

I also added Handlebars partial support. For now it is a single directory, but we could easily extend this with a glob with a particular file extension (ie, **/*.hbs).

Also, tests for partials have not been written yet..

Cheers,
Michael