Add link to TAC repo to the Projects page

Author: kborchers

_pages/projects.md

@@ -2,3 +2,7 @@
 title: "Our Projects"
 collection: projects
 ---
+
+The JS Foundation is host to projects that span the entire JavaScript ecosystem. Below you will see a list of every JS Foundation project. If you would like to learn more about what we do for our projects or would like to submit an applications for your project to join the JSF, check out our [Technical Advisory Committee (TAC)][] repo on GitHub.
+
+[Technical Advisory Committee (TAC)]: https://github.com/JSFoundation/TAC