Merge branch 'master' into dev
added class Prometheus error, printing it with ExceptionHandler in progress
Merge branch 'dev' of https://github.com/groovy354/Prometheus into dev
Wtorkowe zmiany (Bartek + Mariusz)
Merge branch 'master' into issue#41
Layer-manager: done.
Merge branch 'issue#41' into dev
added error printing
Merge branch 'dev' of https://github.com/groovy354/Prometheus into issue#42
added .travis.xml