Challenge `@billmckay` to complete `example-coding-assignment`

[feel-the-beat]

/challenge @billmckay

[feel-the-bot[bot]]

Created challenge beat-interviewing/example-coding-assignment-billmckay-60b for @billmckay.

When ready, use /join @billmckay to invite them as a collaborator.

[feel-the-beat]

/join

[feel-the-bot[bot]]

Granted @feel-the-beat access to beat-interviewing/example-coding-assignment-billmckay-60b

[feel-the-beat]

/delete