Follow a ticket!

Hello again!

I've added a new cwslack-follow.php file which warrants its own release and notes. Since 1.2 this morning I've also added notes to /t and 2 new commands. See usage below

/t [ticket number] initial - Provides the initial note along with ticket details, message visible to you only.

/t [ticket number] full - provides the initial and latest note along with ticket details, message visible to you only.

/follow ticket number - Follow a ticket to get updates from the Slackbot channel just for you. Add unfollow at the end to remove your follow.

As usual, please let me know if you have any questions or comments!

Thanks.