Merge pull request #10 from philidem/master

Merged fork from philidem: Fixed sourceUrlResolver, added getWidget to RenderResult and added logger in TemplateCompiler
Bug fixes for "getWidget()" in RenderResult and added test case
Improvements to the optimizer CLI to automatically use package.json for directory if no dependencies passed in. Also added better rules for determining bundle name if not specified.
Added support for using a template as the renderer for a custom tag
Updated dev spec
Upped the version to 2.0.8