code-for-nashville/code-for-nashville.github.io — pull request #28 by sciurus (2014-10-23 03:28:31+00:00)
Title: Have htmlproofer ignore canonical links

The canonical links point to a URL that does not exist before the page
is created, which leads to false positives from htmlproofer. The
data-proofer-ignore attribute tells htmlproofer to ignore these links.