Close issue command

This responder replies to a specific command closing the issue and possibly adding some labels. Allows labeling.

Listens to

@botname <command>

For example, if you configure the command to be reject, it would respond to:

@botname reject

close_issue_command

command:: The command this responder will listen to.
description:: Optional String to show when the help command is invoked (if the responder is not hidden).

Simplest use case:

Just close the issue.

...
  responders:
    close_issue_command:
      command: reject
...

Close issue, add labels, restrict access to editors:

...
  responders:
    close_issue_command:
      only: editors
      command: reject
      add_labels:
        - rejected
...