Update README

Moved deployment stuff out.
Link to raspberry.io site

Ref #154
Add Apache 2 License
Merge pull request #155 from caktus/feature/readme

Update README
Merge branch 'master' into develop
Ignore '_build' dir which holds generated HTML
Run sphinx-quickstart
First draft of docs

Ref #157
Remove reference to CLA
Merge info from CONTRIBUTING.rst into docs folder

Add a 'submit an issue' heading to the README file, so users wishing
to submit issues shouldn't have to dive into the docs.
Use 'git flow' everywhere

... rather than just 'branch off develop'
Add CHANGELOG
Cleanup contrib docs

- Decrease redundancy in code standards doc
- Note which sections of deploy doc are relevant to contributors
- General cleanup
Merge pull request #158 from caktus/feature/contrib-docs

Create contribution documentation
Remove Caktus from Vagrantfile, jmeter
Config files needed for Travis CI

Ref #163
Merge pull request #171 from caktus/feature/163-setup-travis

Config files needed for Travis CI
First draft of developer docs

Ref #160
Organized the dev docs

Ref #160
Incorporated Caleb's feedback
Merge pull request #172 from caktus/feature/160-dev-docs

Feature/160 dev docs