Update browser-sync script tag
Remove comments modification
Add theme wrapping

Theme wrapping is a much needed feature to improve wordpress
development. This put us in the right direction through a DRY aproach to
our processes.

The implementation was inspired by scribdu theme wrapping [1] and copied
from roots implementation [2].

[1] http://scribu.net/wordpress/theme-wrappers.html
[2] http://roots.io/an-introduction-to-the-roots-theme-wrapper/