periodically purge slack channels

[ian-whitestone]

• build a script to purge files/messaged from slack channels

[ian-whitestone]

use slack-cleaner package

CLI Usage:

$ slack-cleaner --token XXX --message --channel alerts --user "*" --bot --perform
$ slack-cleaner --token XXX --file --perform

Other notes:

• used the xoxp-...604d token
  • had to ensure the token had a number of different permissions (listing users, listing channels, etc.)