Merge pull request #21 from goldengekko/master

push implementation with message, email and sms
OP adding MultiplexCrudService and StringWrappingCrudService
Merge pull request #22 from goldengekko/master

OP Push fixed connection with urbanairship call
[maven-release-plugin] prepare release parent-28
[maven-release-plugin] prepare for next development iteration
Merge pull request #4 from sosandstrom/master

pull from master