doc: adds brendanashworth as collaborator

Moment of truth?

PR-URL: #587
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>

README.md

@@ -213,6 +213,7 @@ information about the governance of the io.js project, see
 * **Stephen Belanger** ([@qard](https://github.com/qard)) <admin@stephenbelanger.com>
 * **Jeremiah Senkpiel** ([@fishrock123](https://github.com/fishrock123)) <fishrock123@rocketmail.com>
 * **Evan Lucas** ([@evanlucas](https://github.com/evanlucas)) <evanlucas@me.com>
+* **Brendan Ashworth** ([@brendanashworth](https://github.com/brendanashworth)) <brendan.ashworth@me.com>
 
 Collaborators follow the [COLLABORATOR_GUIDE.md](./COLLABORATOR_GUIDE.md) in
 maintaining the io.js project.