message: doc(cli): Replace Gitter with forums link in CLI help
  Change-Type: patch
diff: @@ -75,7 +75,7 @@ module.exports = yargs
  'If you need help, don\'t hesitate in contacting us at:',
  '',
  ' GitHub: https://github.com/resin-io/etcher/issues/new',
  - ' Gitter: https://gitter.im/resin-io/etcher'
  + ' Forums: https://forums.resin.io/c/etcher'
  ].join('\n'))
  // Examples
  