message: Open integration manager from widget postMessage.
diff: @@ -22,6 +22,7 @@ limitations under the License.
  import URL from 'url';
  import dis from './dispatcher';
  import MatrixPostMessageApi from './MatrixPostMessageApi';
  +import IntegrationManager from './IntegrationManager';
  const WIDGET_API_VERSION = '0.0.1'; // Current API version
  const SUPPORTED_WIDGET_API_VERSIONS = [
  @@ -196,6 +197,11 @@ export default class WidgetMessaging extends MatrixPostMessageApi {
  });
  } else if (action === 'sticker_message') {
  dis.dispatch({action: 'sticker_message', data: event.data.widgetData, widgetId: event.data.widgetId});
  + } else if (action === 'integration_manager_open') {
  + const data = event.data.widgetData;
  + const integType = (data && data.integType) ? data.integType : null;
  + const integId = (data && data.integId) ? data.integId : null;
  + IntegrationManager.open(integType, integId);
  } else {
  console.warn("Widget postMessage event unhandled");
  this.sendError(event, {message: "The postMessage was unhandled"});
  