sahat/hackathon-starter 5.1.0 on GitHub

Bootstrap 4.1 upgrade (breaking change)
Addition of popper.js
jQuery and Bootstrap will be pulled in the project using their npm packages
Dockerfile will use development instead of production
Security improvement by removing X-Powered-By header
Express errorhandler will only be used in development to match its documentation
Removed deprecated Instagram popular images API call from the Instagram example (@nacimgoura)
Removed mongoose global.Promise as it is no longer needed (@nacimgoura)
Refactoring of GitHub, last.fm api, twitter examples and code improvements to use ES6/ES7 features (@nacimgoura)
Add NodeJS 10 in travis.yml (@nacimgoura)
Improvements to the Steam API example (@nacimgoura)
Readme and documentation improvements (thanks in part to @nacimgoura)
Dependency updates