Good question @scipio. In the video I say to include the Github repo link "... at the top of your post." Also in the Rule and Guidelines we have:

• "In the body of your post always include the link to the github repository at the top, i.e. https://github.com/utopian-io/utopian.io"

Also in each Category Template.

Thanks @scipio. It is important that contributors not forgot this important piece of info in their submissions.