Update README.md

Author: Chris Whong

README.md

@@ -115,6 +115,7 @@ Websites built with Gatsby:
 * [伊撒尔の窝](https://www.yisaer.com)
 * [Artivest's Public Website](https://artivest.co)
 * [William Owen UK](http://william-owen.co.uk)
+* [NYC Planning Labs (New York City Department of City Planning)](https://planninglabs.nyc)([source](https://github.com/nycplanning/labs-planninglabs-home))
 
 ## Docs