Don’t exclude master from Travis-CI

SimonSapin · SimonSapin · commit 49808d1eb6ed · 2017-02-03T00:18:30.000+01:00
This seems to also exclude PRs into master.
diff --git a/.travis.yml b/.travis.yml
@@ -6,8 +6,5 @@ rust:
 script:
     - cargo test
 
-branches:
-  except:
-    - master
 notifications:
   webhooks: http://build.servo.org:54856/travis
