Bump to edge Fernet

Fernet is undergoing some changes with regard to the packaging of data and
the way in which the data is saved.  Bumping to edge Fernet until the gem
is released.
Revert "Bump to edge Fernet"

This reverts commit e4f3c01debc74c0c8bcaef7493394221bfb73bec.
Move to Rspec

Minitest hurts
Merge branch 'rspec'

Conflicts:
	.travis.yml