Require turnip in .rspec
Updated depencencies
Lock project to rspec 2.13 due to incompatability with turnip

* https://github.com/rspec/rspec-core/issues/993
Fix some too clever file glob in spec helper
Ignore .env
Rearrange gemfile again
Install carrierwave gem
Add users table

* The provider, uid, and username columns will make sense when we add
  auth
* The snapshot column will be a carrierwave attachment
Add User model
Add snapshot uploader to User model
Add sensible storage directory for snapshots
Add simple user index view that shows user's snapshot
Ignore uploads
Route root to user index
Add simple snapshot resource to update user snapshot
Using rspec 2.14

* Unfortunately we had to add some configuration to .rspec to get turnip
  working correct on this version
  https://github.com/rspec/rspec-core/issues/993
Add json show action for user snapshot
Set snapshot filename to numeric timestamp
Move JS to page body
Update user snapshot on index once every 10 seconds