Add sample examples to test redis.io build

[uglide]

Make sure that:

• You have read the contribution guidelines.
• You have created a feature request first to discuss your contribution intent. Please reference the feature request ticket number in the pull request.
• You applied code formatting rules using the mvn formatter:format target. Don’t submit any formatting related changes.
• You submit test cases (unit or integration tests) that back your changes.

[tishun]

@uglide you need to run mvn formatter:format

[tishun]

Partial review, before your next iteration