We will be using the Nexus Software Repository for pushing our aars to maven-central, there are different methods to do this, another simple way is to upload to bintray and then push to maven-central from there, which one to use can completely depend upon the developer.
Nexus is a tool used by Sonatype to manage repositories. To use nexus, create an account and remember the user and password, this will be required in the automation script to deploy the artifacts.
Back in 2013 (2013, seriously!) Chris Banes wrote a blog post about an automation script he had written for pushing aars to maven, he had written this script for ActionBar-PullToRefresh (Again, this is 2013 we're talking about), this script can now be found on [github](https://github.