Consider publishing as a full Maven artefact

[paour]

The current instructions for using this library is to include @aar in the dependency line, because you're publishing it without a POM on the Maven server. This works fine for apps, but for libraries, it makes it harder because Gradle doesn't remember to add @aar for the library's own dependencies.

[paour]

Also, the 1.2.5 version currently published to https://bintray.com/ckurtm/maven/FabButton/1.2.5 doesn't seem to have the latest PR merged in (for compatibility with Support 26…