Update README.md

storage/minio/README.md

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 # minio s3
 
+## Features
+Auto generate keys on server creation bypassing default minio keys
+
+
+Automatic Key rotation using "rotate" startup feature
+
+## Auto Rotate
+It's possible to rotate your keys by changing the startup option to "rotate"
+
+
+Once this is changed restart your server and it will automatically move your current keys to old and create your new keys
+
+
+Be sure to change your startup back to "normal" once you have started your server using "rotate". This will ensure that you don't accidentally rotate your keys twice
+
 ## Known Issues
+
 Double encryption may occur if you manually manipulate files in the /keys directory
 
 #### Key rotation is handled automatically, DO NOT manually delete files in /keys