Update README.md (#1724)

Author: dlepaux

packages/node/README.md

@@ -23,7 +23,10 @@ To use this SDK, call `init(options)` as early as possible in the main entry mod
 hook into the environment. Note that you can turn off almost all side effects using the respective options.
 
 ```javascript
+// ES5 Syntax
 const Sentry = require('@sentry/node');
+// ES6 Syntax
+import * as Sentry from '@sentry/node';
 
 Sentry.init({
   dsn: '__DSN__',