Publish in public repo

[pawelsalawa]

To investigate and potentialy publish the binary in public repo, so it's even easier to use the lib using Gradle.

[pawelsalawa]

https://inthecheesefactory.com/blog/how-to-upload-library-to-jcenter-maven-central-as-dependency/en

[pawelsalawa]

Has to be done after #3 and #4