Updated CLI, no dep on pug, SASS support, "Bliss" compiler

'pug' was removed as a jekyll-bliss dependency. This means you'll have to install pug locally on your install. npm i pug --save-dev. There is now sass support! There is also a bliss compiler. Just want to compile pug/sass and don't need to run the files through Jekyll? Use the flag -c Bliss while building in order to just copy the compiled files to your build directory instead of running through Jekyll.

The CLI was updated due to a change in the commander API. See index.js