[#80] Delete user from event
Do not allow non signed in user to add users to event
Not working yet
Merge branch 'master' of github.com:gotar/Internship-calendar-API into delete_user_from_event
Add test for signed in user and invalid params
allow add user to event
Merge branch 'add_user_to_event' of github.com:gotar/Internship-calendar-API into add_user_to_event
Only owner should add user to event
repaired tests and code
rafactored tests
Do not allow adding users to past events; fix typos.
Allow add user to public event
allow add only unique users to event
Added response to test
Allow add user to public event
Update calendar.rb

Removed merge signs, leaved by mistake
Merge branch 'add_user_to_event' of github.com:gotar/Internship-calendar-API
added new tests and rewrited old in add_user_to_event_spec file

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Merge pull request #63 from gotar/add_user_to-event

Add user to event