Reduce spec boilerplate with new RSpec helper methods.
Show linked terms when checking a term.
Use #check for generating output after modification.
Add explicit routes for karma best and karma worst.
Add karma modified command.
Add rate limiting.
Update README with info about configuration and linking.
Add Travis, Code Climate, and SimpleCov/Coveralls.
Test case where #list is called and there are no terms yet.
Depend on Lita 1.0.