Allow us to use fit, fdescribe, :focus etc.

I find it useful sometimes to just slap an `f` in front of `it` or
`describe` when I want to run just a few specs.

Author: bquorning

spec/spec_helper.rb

@@ -28,6 +28,10 @@ module SpecHelper
 
   config.order = :random
 
+  # Run focused tests with `fdescribe`, `fit`, `:focus` etc.
+  config.filter_run focus: true
+  config.run_all_when_everything_filtered = true
+
   # Forbid RSpec from monkey patching any of our objects
   config.disable_monkey_patching!