Contribute your idea by opening an Issue against this repo! Issues allow anyone with a github account to comment on a git repository.
Just click on the "(!) Issues" tab to the right of the "<> Code" tab almost directly below the name of the repository to access the Issues interface.
You can also just link to a write-up using your favorite system for editing and sharing ideas (gdocs, wiki, pastebin, your own github repository, etc.) inside the Issue.