Basic local development documentation|
Work in progress
Restructuring & new sections

Added notes on documentation style docs/improving.rst mostly cribbed from
django CMS docs.

New Introduction section docs/introduction.rst to be expanded over time into
separate pages.

Restructured docs (also explained in improving.rst) - main sections each with their
own style and purpose:

* introduction
* how-to
* reference
Capitalisation of 'Boilerplate'; other minor tweaks
Improved explanation of Boilerplate & Theme
Improvements to Introduction pages
Merge pull request #3 from evildmp/develop-intro-docs

Documentation work-in-progress