[OpenSIPS-Devel] [OpenSIPS/opensips] ff458a: travis: add slack notifications

[Razvan Crainea]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: ff458af3ed48a1aa1ceec2833777f304396b05cd
      https://github.com/OpenSIPS/opensips/commit/ff458af3ed48a1aa1ceec2833777f304396b05cd
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2017-10-24 (Tue, 24 Oct 2017)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  travis: add slack notifications