Update README.md

remove stray `(`

Author: imjared

README.md

@@ -28,7 +28,7 @@ In your client, add:
 ```
 const { renderAnalytics, runAnalytics } = require('analytics-js-without-segment')
 
-const options = ({
+const options = {
   cdnUrl: 'https://cdnjs.cloudflare.com/ajax/libs/analytics.js/2.9.1/analytics.min.js',  // host yourself or use cdnjs (https://cdnjs.com/libraries/analytics.js)
   services: {
     // see integration https://github.com/segment-integrations/analytics.js-integration-google-analytics/blob/master/lib/index.js