[PATCH] Add name=x option to name jobs

This makes it easier to see what is going on with large job files.
diff --git a/README b/README
index 24bf5a0..d27ee87 100644
--- a/README
+++ b/README
@@ -43,6 +43,7 @@
 
 The <jobs> format is as follows:
 
+	name=x		Use 'x' as the identifier for this job.
 	directory=x	Use 'x' as the top level directory for storing files
 	rw=x		'x' may be: read, randread, write, randwrite,
 			rw (read-write mix), randrw (read-write random mix)