Android : Google Play Services with Maven?

I'm some kind of confused. I want to install Google Play Services for Android and found this question: How can i use google play services in a maven project?

There is a reference to https://github.com/mosabua/maven-android-sdk-deployer/ which provides a project to install a lot of mavenized APIs. So I downloaded and built it to get one of the latest Google Play Services API but when I add

<dependency>
    <groupId>com.google.android.gms</groupId>
    <artifactId>play-services</artifactId>
    <version>5.0.89</version>
    <type>aar</type>
</dependency>

to my project, I get a "support-v4-19.1.0.jar" as dependency which includes neither any Google Play Services classes nor do I have any of those layout files supplied with Google Services API. For example: When I look to https://developer.android.com/google/play-services/setup.html, and read the ProGuard part, then there must be at least a class called SafeParcelable, but this included project by Maven does not even have the common package where this class is included. I wonder what's going on here.

The project play-services-5.0.89.aar exists in the Maven repository. But how do I use this? Is there any additional task to do since it's aar or something?