Added the isolated prop to allow the option to be set on the recaptcha, as per google documentation

Author: codeth

README.md

@@ -53,6 +53,7 @@ Properties used to customise the rendering:
 | tabindex | number | *optional* The tabindex on the element *(__default:__ `0`)*
 | type | enum | *optional* `image` or `audio` The type of initial captcha *(__defaults:__ `image`)*
 | theme | enum | *optional* `light` or `dark` The theme of the widget *(__defaults:__ `light`)*. See [example][docs_theme]
+| isolated | bool | *optional* For plugin owners to not interfere with existing reCAPTCHA installations on a page. If true, this reCAPTCHA instance will be part of a separate ID space. *(__default:__ `false`)*
 
 ### Component Instance API
 

package-lock.json

@@ -93,6 +93,7 @@ export default class ReCAPTCHA extends React.Component {
         stoken: this.props.stoken,
         hl: this.props.hl,
         badge: this.props.badge,
+        isolated: this.props.isolated,
       });
       this.captcha.appendChild(wrapper);
     }
@@ -153,6 +154,7 @@ export default class ReCAPTCHA extends React.Component {
       grecaptcha,
       badge,
       hl,
+      isolated,
       ...childProps
     } = this.props;
     /* eslint-enable no-unused-vars */
@@ -174,6 +176,7 @@ ReCAPTCHA.propTypes = {
   stoken: PropTypes.string,
   hl: PropTypes.string,
   badge: PropTypes.oneOf(["bottomright", "bottomleft", "inline"]),
+  isolated: PropTypes.bool,
 };
 ReCAPTCHA.defaultProps = {
   onChange: () => {},