updated

README.md

@@ -4,6 +4,9 @@
 **Portradar** is a freaking fast and stealthy port scanner. Hold my beer! I don't drink though :)
 
 **Note**: I'd advise running this script on a Linux host with atleast 4 cores for maximum efficiency.
+If you're using zsh, execute the script using: ```sh
+`which bash` -c 'set +m && ./portradar.sh <IP>/<CIDR>'
+```
 
 ## Subnet scan
 Scanning open ports across an entire subnet.