Update Gemfile.lock
Update schema
Update specs
Update feature
Add database cleaner gem
Add database cleaner to spec helper
Remove user key from model
Remove user key and permitted attributes from initializers
factories use user_id
ApplicationController uses current_notifiable_user
Update initialiser for device_tokens
Controller changes

Remove user processing and use current_notifiable_user
Merge pull request #32 from FutureWorkshops/remove_user_key

Remove user key/permittable params, change to use id