Update README.md

Author: typicode

README.md

@@ -17,9 +17,17 @@ See also:
 
 ## Sponsors
 
-<a href="https://www.youtube.com/channel/UC29ju8bIPH5as8OGnQzwJyA">
-  <img src="https://i.imgur.com/2LDiENb.png" height="60px">
-</a>
+<p>
+  <a href="https://www.youtube.com/channel/UC29ju8bIPH5as8OGnQzwJyA">
+    <img src="https://i.imgur.com/2LDiENb.png" height="60px">
+  </a>
+</p>
+
+<p>
+  <a href="https://tigersheet.com/" target="_blank">
+    <img src="https://i.imgur.com/RvvnNlB.png" height="60px">
+  </a>
+</p>
 
 [[Become a sponsor]](https://patreon.com/typicode)