Added support for comments like, '{{// comment here}}'

Added support for comments like, '{{// comment here}}' and also re-created doT.min.js using uglifyjs.  Example use:

    {{// This comment will be removed from the final template}}
    <span>{{=it.name}}</span>

This allows for doT-only comments that will only show up in the template file itself and not the final output.