Merge pull request #17 from runger/master

ASDK-167
[maven-release-plugin] prepare release metova-android-2.0.28
[maven-release-plugin] prepare for next development iteration
ASDK-161
ASDK-161
update android maven plugin version to support latest SDKs
Reverting since maven 3.1.1 is buggy and not on build servers yet.
Merge branch 'master' of https://github.com/metova/metova-android-sdk
ASDK-174 updated property/plugin/dependency versions to latest