No bug - Stop travis IRC spam from user forks. r=Callek

.travis.yml

@@ -34,13 +34,11 @@ script:
 after_script:
   - tox -e py27-coveralls
 
-# currently cannot customise per user fork, see:
-# https://github.com/travis-ci/travis-ci/issues/1094
-# please comment out this section in your personal fork!
+# The channel name "irc.mozilla.org#releng" is encrypted against mozilla/build-tools to prevent IRC spam of forks
 notifications:
   irc:
     channels:
-      - "irc.mozilla.org#releng"
+      - secure: VStaKCWB7rIbCJEb5hh0sGmtMxTCvm9s4WN3H00BTeNJ7DGQNP4o7b7dN637o80RzVOEE22yMMw2e4fn4wAtqG1A+0DKtcrr6KtOislDmXnex37pi90qP0I8yNEAyh7NzhGNP5u7/HP1VSwI7mgMEOyMHYa5lX7KijABcAnBybU=
     on_success: always
     on_failure: always
     template: