add comment for how to use

AD7six · AD7six · commit f2f603ba1d17 · 2012-01-30T09:54:32.000+01:00
diff --git a/collectionSizes.js b/collectionSizes.js
@@ -1,7 +1,10 @@
 /**
  * loop on all collections and output their counts and size in bytes.
  *
- * Prints in a tabular format
+ * Prints in a tabular format.
+ *
+ * Call as:
+ * 	$ mongo <databasename> collectionSizes.js
  */
 
 var i, size, count,
