CI / Cleanup

[abitrolly]

• Link old https://github.com/Appscrunch/Multy to this new repo
• Link to Wiki/docs from README.md
• Document current choice of CI (Travis?)

https://github.com/Multy-io/Multy-back

• Add link to current Travis CI status badge (master)
• Add :latest container upload from master to https://hub.docker.com/r/multyio/multy-back
  • Ensure container is uploaded after testing
    • Test app in container alone
    • Test with other containers as a complete app (integration test)
• Add automated tests (if any)