Fix 2 non-critical areas of confusion for students
…l allow Typo to run on Heroku Cedar.
Add cucumber starter features, merge in fdv/typo
Update Typo to latest version, enable cucumber
… which is false in a production only environment. Enhance error message and protect against nil values
There is no reason to require a strict specific Rails version now that Bundler takes care of dependencies. Addressable 2.2.6 also works fine.
…n't even take care of our own language, such a shame.