Add Drupal Extension / BDD examples

[geerlingguy]

Behat is where it's at. Add https://www.drupal.org/project/drupalextension to this project and run some tests with it. Maybe even add a custom module and do some tests with it on a freshly-installed Drupal site inside Travis.

[geerlingguy]

Also, https://www.drupal.org/project/behatrunner; and check out https://www.drupal.org/project/lightning for some other good ideas.

[geerlingguy]

Another few projects:

• https://github.com/unn/test-driven-drupal-qa
• http://unn.github.io/acquiaqa/