How to connect github account to keybase? Here is why-
The Big Stellar Space Drop To qualify: you must have a Keybase account registered before this announcement OR if you're new to Keybase, you must connect your Keybase account to a GitHub or HackerNews account that was registered before this announcement. This is to prevent bot signups to Keybase.
In the app (i'm using the Mac version) go to People > Prove your identities > Prove your Github
Click on the profile icon, choose view profile, than you will have an option to prove GitHub.