Tag README with virtual graffiti

[trvs-sdlr]

In order to complete activity A, add virtual graffiti tag to README file
with trvs-sdlr github handle.

[genebean]

Hey @trvs-sdlr 👋🏻 One aspect of this lesson was the code review process. To that end, please fix the issues identified in the automated testing.

[CLAassistant]

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.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}