specifiying node version for rscli

content/page/dev-tools/rscli.mdx

@@ -6,6 +6,10 @@ banner: true
 
 The Riverscapes Command Line Interface (RSCLI) is a small, lightlight application for interacting with the [Riverscapes Data Exchange](https://data.riverscapes.net) and the associated [API](./api). RSCLI simplifies the process of uploading and downloading data from the Riverscapes Data Exchange. It handles authenticating your user account and validating data uploads.
 
+# Prerequisites
+
+You must have node version 18 installed on your computer to use the RSCLI. You can download the latest version of node from the [official website](https://nodejs.org/). As of the current time of writing, it must be version 18, preferably the Long Term Release (LTR).
+
 # Installing the RSCLI
 
 Open a command line prompt (Terminal on Mac, Command Prompt on Windows) and run the following command: