Provide a proof-of-concept tool that can:
1. Set a common value for a secure Travis CI env var
2. Across multiple GitHub repositories
3. With a minimum of time and effort
It doesn't need to be a 100% solution to the update-CI-vars-for-the-simp-pupmod-repos (yet)—we just need to identify a tech stack that we can tweak to taste without much effort later.