Update props in readme

Author: nhunzaker

README.md

@@ -36,8 +36,8 @@ When Focus Trap is active, it will do several things:
 
 | Name       | Default               | Description                                           |
 | ---------- | --------------------- | ----------------------------------------------------- |
-| active     | `false`               | Should the FocusTrap render?                          |
+| active     | `true`                | Should the FocusTrap render?                          |
 | className  | `'focus-trap`         | The class of the inner container that maintains focus |
-| onExit     | `null (but required)` | Callback when escape or an outside click occurs       |
+| onExit     | `null`                | Callback when escape or an outside click occurs       |
 | element    | `'div'`               | The tag name of the inner container                   |
 | role       | `'dialog'`            | The aria role for the inner container                 |