Heroku Deployment

Follow Vapor Deployment Docs through committing build files

I pushed at this point and got an error: missing LinuxMain.swift in the tests directory.
- run command swift test —-enable-test-discovery in terminal
- I also had to run swift test --generate-linuxmain
  - if you have already tried to push, you need to run heroku buildpacks:clear then
    - heroku buildpacks:set vapor/vapor
    - Rollback app to v1 on heroku.com!
Continue with Vapor Deployment Docs