refactoring

Merge remote-tracking branch 'origin/master'

refactoring and gqlgen version update

added newline in README.md

Some smaller improvements

Added metrics, status and stack endpoint (for debugging)

Merge pull request #1 from alexzimmer96/documentation

some more comments and small improvements

Merge branch 'master' into documentation

Added some documentation in the article repository

fixed links in README.md

Create LICENSE

Added README.md

adjusted resolvers, article and service for making this example work now

added repositories and services. added unstable subscription