Changed providers to properly support whyrun?

I thought I would help you out on your project. It was a great start. I grabbed it to use. I've tweaked your providers. I've attempted to maintain backwards compatibility as much as possible. 

Updated documentation.
Added support for SELINUX = disabled systems
Added install.rb as include in default.rb
Bumped major version of cookbook to 1.0.0
Add notion of exits? disabled? match?
Removed setpersist action, replaced with persists value true/false toggle