Pug support

[rustige]

Please integrate Pug support (Jade was renamed to pug in node)

[manrueda]

@rustige Pug is still in 2.0.0-alpha. I will change it when the version 2 is released.
We have 6 month to change....

[ScorpioCoding]

Having an issue with PUG and include.
The function include works but the compiler doesn't want to compile the child file with ".pug" extension.

Parent file base.pug
Child file kid.pug
include kid.pug "doesnt work
include kid.jade 'does work'