This commit organizes the README by

- moving the overview of the project to the top
- moving instructions for workshop organizers to new file
- moving StepFile reference to new file
- removing redundant TODOs that should be filed as issues
- removing redundant details on how to contribute
Titleizer uppercases HTML

Stealing all of @tjgrathwell's low hanging fruit part 1.
Changes titleizer_spec to rspec expect syntax

I'm told this is "the future of rspec"

Stealing @tjgrathwell's thunder part II
Merge branch 'master' of https://github.com/tjarratt/docs into tjarratt-master