Add Shipt sites.md

hzhu · hzhu · commit 199e3bb35333 · 2019-11-13T10:08:13.000-08:00
Shipt's single page web application has been using tachyons since April 2017!
diff --git a/sites.md b/sites.md
@@ -107,3 +107,4 @@
 * https://tools.kaklabs.com
 * https://eppendocs.de
 * https://sparrowmobile.com/
+* https://shop.shipt.com
