Namespace ALL the THINGS!

- Added Page/Post Entities
- Added Page/Post Repositories
- Organised layouts/partials better
- Added Writer (WIP) but still not happy with that at all
Added PostWriter Functionality

- Added PSR-2 CS
- Added Markdown library and Twig extension
- Added Post generation functionality
- Added Demo markdown Post
Added Entity Renderer/Writer Implementation

- Added Page Renderer
- Modified Page Writer
- Added Post Renderer
- Modified Post Writer
- Added get/set/has to Container
- Moved shared functionality for Entities into AbstractEntity
- Moved shared functionality for Commands into AbstractCommand
- Created individual command to generate Pages, Posts, or All.
Added simple README for _app
Merge pull request #1 from phpne/develop

Develop