Merge branch 'release/database' into develop
Created model directory, renamed model
Refreshed in class
Added tests for all /tutorials paths (POST and GET)

- app_spec:
  - follow redirects, check for :redirect?
  - check regex match of found results, :not_found? for invalid requests
- app: no longer issue 201 status for redirect
- environments: moved to config/ and loads sqlite3 configurations from database.yml
- Created database.yml
Removed indentation in database.yml
app_spec: add before clause for /tutorials specs; add descriptions
Merge branch 'feature/db-test' into develop
Changed /api/v1 to /api/v2 in three files: app, app_spec, README
Specify API version number in README
Merge branch 'release/db-test'