** Could do with someone checking the git process in Using Git doc to make sure the workflow is right. It's how I do it currently so I'm sure it's wrong :) **
Updated Code Guidelines doc to include advise on not using ?>
Added Style guideline doc.
Added Using Git doc to detail the process of contributing and submitting a PR.
Updated Contributing doc to point to new resources.
Example docs: http://laf-docs.readthedocs.org/en/docs-devel/
Updated development docs
Updated pgp -> php mistake