Feature/db migrations

commit a2aec8c42c16b96f287ad7b86f5e7788b1870b65
Author: Richard Kellermeyer <rkellermeyer@changehealthcare.com>
Date:   Fri Nov 7 20:55:38 2014 -0600

    removed yml

commit 8ff1d4fcc7f3b9af7182bc8b4c5cf8fd3ae454ac
Author: Richard Kellermeyer <rkellermeyer@changehealthcare.com>
Date:   Fri Nov 7 20:52:43 2014 -0600

    Created exercises

commit 639ab882066e62e176d4913d0dc7aba22d5009f2
Author: Richard Kellermeyer <rkellermeyer@changehealthcare.com>
Date:   Fri Nov 7 20:49:20 2014 -0600

    Ignore database.yml