add etherealjoy to cpp tech committee

Author: wing328

README.md

@@ -1079,7 +1079,7 @@ If you want to join the committee, please kindly apply by sending an email to wi
 | Android | @jaz-ah (2017/09) |
 | Apex  |     |
 | Bash  | @frol (2017/07) @bkryza (2017/08) @kenjones-cisco (2017/09) |
-| C++      | @ravinikam (2017/07) @stkrwork (2017/07) @fvarose (2017/11) |
+| C++      | @ravinikam (2017/07) @stkrwork (2017/07) @fvarose (2017/11) @etherealjoy (2018/02) |
 | C#        | @mandrean (2017/08) @jimschubert (2017/09) |
 | Clojure   |  |
 | Dart      | @ircecho (2017/07) |