Doc update

mclarkson · mclarkson · commit 5c10d9427e97 · 2017-05-24T11:05:43.000+01:00
diff --git a/README.md b/README.md
@@ -232,7 +232,7 @@ done
 
 | JSONPath               | Supported | Comment                                                 |
 | -----------------------|-----------|---------------------------------------------------------|
-| $                      |     Y     | the root object/element                                 |
+| $                      |     Y     | the root object/element (optional)                      |
 | @                      |     Y     | the current object/element                              |
 | . or []                |     Y     | child operator.                                         |
 | ..                     |     Y     | recusive descent.                                       |
