Add pry and pry-doc as development dependencies
Add acceptance test for typeable passwords

Includes a matcher which checks whether parts of the generated passwords
com from a given list of words.
Make acceptance test use dictionary

Also print more helpful error message if the executable prints an error.
Add unfinished TypeableAlgorithm

Test suite is far from complete.
Put feature spec in pending block

I'll wait until the TypeableAlgorithm is ina decent state before putting
this test online.
Don't use deprecated RSpec pending block syntax
Write algorithm test for different layouts