Refactor routes to mount OKComputer as an engine, and add :mount_at config option
Rename app namespace from OKComputer to OkComputer (lowercase 'k')
Namespace Change:
- Bump version to 0.7.0
- Add post install message about namespace change
- Add shim to throw error for legacy OKComputer module
- Add note about namespace change to deprecations section of README
Revert name of root file to "okcomputer.rb" (bundler can't load "ok_computer.rb" due to name of repo)
Merge pull request #42 from johnnyshields/engine-refactor

Refactor OKComputer routes into an engine, and isolate its namespace