Add `projectile` ( https://github.com/bbatsov/projectile )
Enable projectile for perl files
Add two libraries:
* s ( https://github.com/magnars/s.el )
* dash ( https://github.com/magnars/dash.el )
Add submodule `grizzl` ( https://github.com/d11wtq/grizzl )
Use `grizzl` as completion system for projectile
Use projectile for elisp and shell scripting
Have projectile deferred
Fix quotes