improvement: expose docExpansion as a prop in swagger-ui-react (via #5242)

* improvement: expose docExpansion setting as a prop in swagger-ui-react

* Update README.md

* Update index.js

* Update README.md

* Update README.md

flavors/swagger-ui-react/index.js

@@ -16,6 +16,7 @@ export default class SwaggerUI extends React.Component {
       requestInterceptor: this.requestInterceptor,
       responseInterceptor: this.responseInterceptor,
       onComplete: this.onComplete,
+      docExpansion: this.props.docExpansion,
     })
 
     this.system = ui
@@ -80,4 +81,5 @@ SwaggerUI.propTypes = {
   requestInterceptor: PropTypes.func,
   responseInterceptor: PropTypes.func,
   onComplete: PropTypes.func,
+  docExpansion: PropTypes.oneOf(['list', 'full', 'none']),
 }