docs: add notes about dangers of installing on unsupported pfsense versions

Author: jaredhendrickson13

README.md

@@ -33,6 +33,10 @@ API package and provide you with the information you need to configure and use t
 For new users, it is recommended to refer to the links in the [Getting Started section](#getting-started) to begin. Otherwise, the installation
 commands are included below for quick reference.
 
+> [!WARNING]
+> Before installing the package, always ensure your pfSense version is supported! Support version are listed [here](https://pfrest.org/INSTALL_AND_CONFIG/#supported-pfsense-versions).
+> Installation of the package on unsupported versions of pfSense may result in unexpected behavior and/or system instability.
+
 Install on pfSense CE:
 
 ```bash
@@ -50,6 +54,7 @@ pkg-static -C /dev/null add https://github.com/jaredhendrickson13/pfsense-api/re
 > the [releases page](https://github.com/jaredhendrickson13/pfsense-api/releases) to find the package built for
 > your version of pfSense.
 
+
 ## Disclaimers
 
 > [!CAUTION]

docs/INSTALL_AND_CONFIG.md

@@ -18,6 +18,9 @@ run pfSense. It's recommended to follow Netgate's [minimum hardware requirements
 - pfSense Plus 24.03
 - pfSense Plus 24.11
 
+!!! Warning
+    Installation of the package on unsupported versions of pfSense may result in unexpected behavior and/or system instability.
+    
 !!! Tip
     Don't see your version of pfSense? Older versions of pfSense may be supported by older versions of this package.
     Check the [releases page](https://github.com/jaredhendrickson13/pfsense-api/releases).