Changed #it to #example (still aliased with #it and #specify). Also some refactoring in example_group_methods.
Changed #it to #example (still aliased with #it and #specify). Also some refactoring in example_group_methods.

mrkn/rspec,alitalia/rspec,dchelimsky/rspec,dchelimsky/rspec-stories,alitalia/rspec,dchelimsky/rspec,patmaddox/rspec,phinze/rspec,patmaddox/rspec,dchelimsky/rspec-stories