doc: add Fishrock123 to the TC

as per https://github.com/iojs/io.js/issues/1502

PR-URL: https://github.com/iojs/io.js/pull/1507
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

README.md

@@ -280,7 +280,7 @@ information about the governance of the io.js project, see
   - Release GPG key: DD8F2338BAE7501E3DD5AC78C273792F7D83545D
 * **Thorsten Lorenz** ([@thlorenz](https://github.com/thlorenz)) <thlorenz@gmx.de>
 * **Stephen Belanger** ([@qard](https://github.com/qard)) <admin@stephenbelanger.com>
-* **Jeremiah Senkpiel** ([@fishrock123](https://github.com/fishrock123)) <fishrock123@rocketmail.com>
+* **Jeremiah Senkpiel** ([@fishrock123](https://github.com/fishrock123)) <fishrock123@rocketmail.com> (Technical Committee)
   - Release GPG key: FD3A5288F042B6850C66B31F09FE44734EB7990E
 * **Evan Lucas** ([@evanlucas](https://github.com/evanlucas)) <evanlucas@me.com>
 * **Brendan Ashworth** ([@brendanashworth](https://github.com/brendanashworth)) <brendan.ashworth@me.com>