Resolve "add method to leave room"

Closes #9 (closed)

added 5 commits

• c2dfdb79 - added ddp methods for blocking unblocking users
• 35e8f0c9 - fixed channel service
• 25f493c7 - removed unused function
• 0c46c3ef - added ddpmethod for leaving rooms
• c2498be8 - Merge branch '6-add-method-for-blocking-users' into 9-add-method-to-leave-room

Compare with previous version

added 5 commits

• c2498be8...46ea7e9c - 2 commits from branch master
• 0d3a5cba - added code to remove channel
• 30306296 - Merge branch 'master' into 9-add-method-to-leave-room
• 86595fd3 - remove channel from model

Compare with previous version

unmarked as a Work In Progress

mentioned in commit 49dab5bf

merged