generate cohort model with name, starts_at, ends_at attributes and location association
rake db migrate to add cohorts table
add users association to cohort model
generate staff/cohorts controller
add some helper methods to application controller
add basic CRUD for cohorts controller
generate migration to associate users with a cohort
rake db migrate to associate users with a cohort
Merge branch 'master' into ryan/add_cohorts

Add in UI changes from Curtis.
bundle install after merging upstream changes
add belongs_to cohort association to user model
add a public layout for unauthenticated users
edit site controller to render new public layout
rename public layout to correct file extension
make sign out link in nav partial actually work
add layout method to application controller to render public layout for devise controllers
Merge pull request #7 from cmckee-dev/ryan/add_cohorts

Very nice.