updated README.md

Author: 39ff

README.md

@@ -3,6 +3,12 @@ next generation squid user-management WebUI alternative proxymin,Squid Users Man
 
 ![index](https://user-images.githubusercontent.com/7544687/79716113-a3db6000-8310-11ea-8f53-3f512e02aa46.PNG)
 
+
+## Pre requirements
+- Make sure squid is compiled with --enable-basic-auth-helpers=DB option.
+- Use MySQL driver settings in the squid.conf file
+https://wiki.squid-cache.org/ConfigExamples/Authenticate/Mysql
+
 ## Installation
 PHP7+