grosser/parallel_tests — pull request #227 by felixclack (2013-05-30 08:31:46+00:00)
Title: Option to split cucumber features by scenario.

Inspired by [cukeforker](http://github.com/jarib/cukeforker). Sometimes
the time it takes to run a feature can vary even when containing the
same number of scenarios. In this case it might be more efficient to
group by scenario instead of feature.

As well as adding the option to group by scenario, this also updates the rake task with an argument to set the group type.