travel_back()
Instance Public methods
Returns the current time back to its original state, by removing the stubs
added by `travel` and `travel_to`.
Time.current # => Sat, 09 Nov 2013 15:34:49 EST -05:00
travel_to Time.new(2004, 11, 24, 01, 04, 44)
Time.current # => Wed, 24 Nov 2004 01:04:44 EST -05:00
travel_back
Time.current # => Sat, 09 Nov 2013 15:34:49 EST -05:00