Minor additions and corrections
Merge pull request #11 from harding/tweaks

Added a conventions guide to the top
Move convention guide inside the div block
Add notoc attribute to the convention guide
Apply convention rules and add spaces for clarity
Improve table, code and ol styles
Summarize conventions guide
Merge branch 'more-tweaks' into tweaks
Merge remote-tracking branch 'saivann/dev' into tweaks
Add a paragraph about contributing.