Update readme to include support for Node 16

Author: patrick-tolosa

README.md

@@ -30,7 +30,7 @@ For the complete documentation, see the [Node SDK Guide](https://cloudinary.com/
 
 
 ## Version Support
-| SDK Version   | node 6-14 |
+| SDK Version   | node 6-16 |
 |---------------|-----------|
 | 1.0.0 & up   | V         |