[MB-785] Update functional tests for modernized sample.
Merge pull request #120 from urbanairship/MB-785

[MB-785] Update functional tests for modernized sample.
[MB-825] Update the samples setup instructions
[MB-833] Update to android gradle plugin 1.0.0-rc4
Merge pull request #122 from urbanairship/MB-833

[MB-833] Update to latest android gradle plugin
Merge remote-tracking branch 'origin/next' into patch