Converted nested_example_groups.feature over to new step style.  Did not use the stack example from the examples/passing dir since it was long and seemed to add a lot of noise when inlined with the feature. So I created a nested example group for the feature.
Converted nested_example_groups.feature over to new step style.  Did not
use the stack example from the examples/passing dir since it was long
and seemed to add a lot of noise when inlined with the feature. So I
created a nested example group for the feature.

phinze/rspec,alitalia/rspec,alitalia/rspec,dchelimsky/rspec,mrkn/rspec,dchelimsky/rspec