add remote_id to users
add api/projects resource
add database_cleaner gem
Use token_authenticatable
turn on request tests in test_helper
finish first request test for api/projects
add "role" to users
add admin? method
only admin can add new projects
add tasks_test request test
add api/tasks resource
rename projects/tasks resource with foreign
Merge branch 'requests'

* requests:
  rename projects/tasks resource with foreign
  add api/tasks resource
  add tasks_test request test
  only admin can add new projects
  add admin? method
  add "role" to users
  finish first request test for api/projects
  turn on request tests in test_helper
  Use token_authenticatable
  add database_cleaner gem
  add api/projects resource
  add remote_id to users