rhettg: add example print program
rhettg: add example print program

Simple command to output an example message.

Change-Id: I2782799120929a4f6c283b2e54af20c4222678ba
Reviewed-on: https://go-review.googlesource.com/132456
Run-TryBot: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

golang/scratch