Update README.md

README.md

@@ -46,6 +46,9 @@ https://github.com/hellzerg/optimizer/blob/master/LEGACY.md
 * Compatible with Windows 7, 8, 8.1, 10
 * Can run under Windows Server 2008, 2012, 2016, 2019 using /unsafe switch
 
+## Tools used: ##
+* ByteSize from https://github.com/omar/ByteSize
+
 ## Details: ##
 
 * Latest version: 7.0