[OpenSmalltalk/opensmalltalk-vm] 792adf: Update Travis CI badge [ci skip]

 
  Branch: refs/heads/Cog
  Home:   https://github.com/OpenSmalltalk/opensmalltalk-vm
  Commit: 792adfd0b5116a7f65656db2b8fc412e6a40c195
      https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/792adfd0b5116a7f65656db2b8fc412e6a40c195
  Author: Fabio Niephaus <[hidden email]>
  Date:   2020-11-26 (Thu, 26 Nov 2020)

  Changed paths:
    M README.md

  Log Message:
  -----------
  Update Travis CI badge [ci skip]

See http://forum.world.st/ANN-Migrating-the-opensmalltalk-vm-repo-from-travis-ci-org-to-travis-ci-com-td5124971.html