Extend GitHub demo

[Cerchie]

extends GitHub Connector demo with Streams example.

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[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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[Cerchie]

@Cerchie - this looks good, just one minor comment to add the command to run the application.

great! added it