Railway Versions Save

1. Added more documentation
2. Removed Cloudwatch Agent from development environment
3. Fixed a bug in Cloudwatch Agent
4. Gave each process type it's own Cloudwatch Group
5. Upgraded to Ansible 4.0
6. Added playbooks for contributors
7. Renamed parameter groups
8. Replace jpeg-turbo with mozjpeg
9. Updated package versions
10. Configured zero downtime deploys for production

The first release of Railway.