If you'd like your contributions to be displayed in the repo readme, do the following:
In an issue or pull request, simply comment the following:
@all-contributors please add @[github username] for [contribution]
NOTE: Multiple contributions can be added at the same time. You can find the contribution types here.
For example:
@all-contributors please add @tbenning for design
@all-contributors please add @AlexanderTheGrape for bug design
The bot should then comment in the same issue/pull request with a link to a pull request it'll have made to the master branch. Get this checked and approved by others, and then you'll see your amazing contributions in the readme on github!