[maven-release-plugin] prepare for next development iteration
update version to 0.6.1-SNAPSHOT
Fix Android sample link
SDKJAVA-7 Expose stateless API, and adding a bunch of test cases with mock server
Remove deprecated methods
Prepare 0.6.1 release
[maven-release-plugin] prepare release v0.6.1
Merge tag 'v0.6.1'

[maven-release-plugin]  copy for tag v0.6.1