Merge pull request #26 from nabetama/users

UsersInfo
Merge pull request #27 from nabetama/users

UserSetActive
Create name space.
Common test using pytest.
Add common test case.
Add unit tests where api.
Improved auth test.
Merge pull request #28 from nabetama/authtest

Improved auth test.
Add unit tests where test auth.
Merge remote-tracking branch 'origin/master' into tests
Add test channel.
Add new channel name for test.
Merge pull request #29 from nabetama/tests

Tests
Update README.
Merge pull request #30 from nabetama/tests

Tests
test_user
Merge pull request #31 from nabetama/tests

test_user
Test channels
Merge pull request #32 from nabetama/tests

Test channels
Fixed: TestChannels object has no attribute 'slack'.