Update sponsors list

Author: bobbyiliev

README.md

@@ -58,6 +58,12 @@ The first 13 chapters would be purely focused on getting some solid Bash scripti
 
 This book is made possible thanks to these fantastic companies!
 
+### 📊 Materialize
+
+The Streaming Database for Real-time Analytics.
+
+[Materialize](https://materialize.com/) is a reactive database that delivers incremental view updates. Materialize helps developers easily build with streaming data using standard SQL.
+
 ### 💙 DigitalOcean
 
 DigitalOcean is a cloud services platform delivering the simplicity developers love and businesses trust to run production applications at scale.