Add " More Than You Ever Wanted to Know About Resource Hints"

[stefanjudis]

Hey there!

Thanks for contributing to perf-tooling!

Please make sure that you followed the following conventions:

• [x] your commits follow the gitmoji convention
• [x] the build on travis succeeds
• [x] your changes align with the rules in the CONTRIBUTING.MD

Note: For all commits dealing with resources, we decided to use the :memo: emoji for commit messages.

And that's it. Thanks! ;)