Add open-source site Project TIER (#94)

README.md

@@ -292,6 +292,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [HackConf](https://github.com/HackSoftware/hackconf.bg) – Website for the annual HackConf.
 - [RTEI](https://github.com/okfn/rtei) – Right to Education Index website (OKFN).
 - [BVSPCA](https://github.com/nfletton/bvspca) – Bow Valley SPCA website.
+- [Project TIER](https://github.com/ProjectTIER/projecttier.org) – Teaching Integrity in Empirical Research.
 
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