Add vweevers to streams wg (#431)

Author: vweevers

README.md

@@ -99,5 +99,6 @@ Node.js. The responsibilities of the Streams Working Group include:
 * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) <matteo.collina@gmail.com>
   - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E
 * **Robert Nagy** ([@ronag](https://github.com/ronag)) <ronagy@icloud.com>
+* **Vincent Weevers** ([@vweevers](https://github.com/vweevers)) <mail@vincentweevers.nl>
 
 [sauce]: https://saucelabs.com