better usage prompt + hash opti on server

cmd/cli/commands/run/run.go

@@ -20,11 +20,14 @@ type (
 	}
 )
 
-func (*RunCmd) Name() string     { return "run" }
-func (*RunCmd) Synopsis() string { return "Check and process all the folder" }
+func (*RunCmd) Name() string     { return "scan" }
+func (*RunCmd) Synopsis() string { return "check and process all the folder" }
 func (*RunCmd) Usage() string {
-	return `run:
-  Check and process all the folder
+	return `Usage: cloudsave scan
+
+Check if the files have been modified. If so,
+the current archive is moved to the backup list
+and a new archive is created with a new version number. 
 `
 }