Update 'iSpy-Surveillance/README.md'

Extended the document - still work in progress

iSpy-Surveillance/README.md

@@ -51,4 +51,8 @@ ln -s /etc/nginx/sites-available/your_configfile.conf /etc/nginx/sites-enabled/
 ```
 
 ###### 
-Download and execute the dvr Agent installation.
+Download and execute the dvr Agent installation. (this also creates the AgentDVR directory)
+```
+cd /opt
+bash <(curl -s "https://raw.githubusercontent.com/ispysoftware/agent-install-scripts/main/v2/install.sh")
+```