message: fix links to subdocs
diff: @@ -16,11 +16,11 @@ a future filled with talking machines!
  Botkit features a comprehensive set of tools to deal with popular messaging platforms, including:
  -* [Slack](readme-slack.md)
  -* [Cisco Spark](readme-ciscospark.md)
  -* [Facebook Messenger](readme-facebook.md)
  -* [Twilio IP Messaging](readme-twilioipm.md)
  -* [Microsoft Bot Framework](readme-botframework.md)
  +* [Slack](docs/readme-slack.md)
  +* [Cisco Spark](docs/readme-ciscospark.md)
  +* [Facebook Messenger](docs/readme-facebook.md)
  +* [Twilio IP Messaging](docs/readme-twilioipm.md)
  +* [Microsoft Bot Framework](docs/readme-botframework.md)
  * Yours? [info@howdy.ai](mailto:info@howdy.ai)
  ---
  