Set version number to 3.0

README.md

@@ -1,12 +1,12 @@
 # Printscan server
-## Version 3
+## Version 3.0
 
 This repository contains files used to set up our printscan server on a freshly installed Armbian. Target is Bullseye.
 
 ### Introduction
 (see wiki for need and concept explanation)
 
-Version 3 implementation works roughly as follows:
+Version 3.0 implementation works roughly as follows:
 ##### SBC
 * the Armbian-based device is connected to local network, and an all-in-one printer is connected to it via USB;
 * SANE and CUPS services are installed and running on the device;