Use gravatar to show who is working on an item
Add email to alt text
Add editable checklist WIP
Rename memberships to assignments
Update checkbox when clicked
Merge branch 'master' into editable-checklist

Conflicts:
	features/backlog_item.feature
	features/step_definitions/backlog_item_steps.rb
Merge branch 'gravatar'

Conflicts:
	app/models/user.rb
	app/views/backlog_items/show.html.erb
Merge branch 'assignments'

Conflicts:
	app/models/user.rb
Merge branch 'editable-checklist'
Add edit backlog item
Show different colors based on whether item is complete
Change position of seed data