Jade no longer supports "!!!" and "5" for "doctype" and "html"

I was trying to run a fresh install and I got this error "`!!!` is deprecated, you must now use `doctype`"

See this issue from the jade repo...

https://github.com/visionmedia/jade/pull/1270

Just simply switched "!!! 5" to "doctype html"

As an aside there is an issue with bower and the `cleanBowerDir` option. For me it removes the public/lib directory after populating it with files. I think it might be a bug in grunt or bower though so I didn't include it.