Initial import of very brief usage instructions

weka_upgrade_checker/README.md

@@ -1,2 +1,23 @@
 # weka_upgrade_checker
 Weka Upgrade Checker
+
+The script takes into account all of the best practices requirements outlined in the document for upgrade best practices.
+
+It is recommended that the pre-upgrade checker be run 24hrs in advance so that all issues can be resolved prior to the planned upgrade window.
+
+
+## Prior to running the script follow the prerequisites listed below:
+
+1. The script should be run on a backend weka host
+2. You should have either sudo access or be root. On AWS systems it's usually easier to be ec2-user
+3. Your user should be logged to WEKA, such that `weka status` etc work
+4. Passwordless SSH should be configured prior to starting.
+
+[Github link](https://github.com/weka/tools/tree/master/weka_upgrade_checker)
+
+To download directly to a host with Internet access (into current directory), make the script executable, and show syntax help:
+
+```bash
+curl -LO https://github.com/weka/tools/raw/master/weka_upgrade_checker/weka_upgrade_checker.py
+python3.8 ./weka_upgrade_checker.py
+```