Ack Niccolò Tiezzi

Author: hollasch

books/acknowledgments.md.html

@@ -60,6 +60,7 @@
   - Matthew Heimlich
   - Nakata Daisuke
   - [Nate Rupsis](https://github.com/rupsis)
+  - [Niccolò Tiezzi](https://github.com/niccolot)
   - Paul Melis
   - Phil Cristensen
   - [LollipopFt](https://github.com/LollipopFt)