chore(travis): whitelist greenkeeper branches

greenkeeper[bot] · jlengstorf · commit a5cb4f27b551 · 2017-10-17T16:51:48.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -23,6 +23,7 @@ after_success:
 branches:
   only:
   - master
+  - /^greenkeeper/.*$/
 env:
   global:
   - CC_TEST_REPORTER_ID=3f97d4ca639289c139796067359d46e7583e2d83701a315e40c1d1f58567afa8
