Additions to test env to reduce test time and integrate with guard:

Added database_cleaner gem to the :development, :test group to play
nice with Zeus. I also alphabetized the listing of the gems in the dev
and test groups.

Added guard-livereload to automatically reload your browser window when
you modify and save a view file.

Added parallel_tests and integrated with Zeus.

Setup guard to work with Zeus/Parallel tests.

Added and removed some lines from the Guard file to make it more
appropriate to our use case.

Modified GC methodology with test suite to shave off a few seconds.

Fine-tuned zeus.json file and created an alias for zeus parallel_rspec