add back branches [publish binary]

.travis.yml

@@ -13,6 +13,12 @@ addons:
     packages:
      - clang-3.5
 
+# don't re-build for tags so that [publish binary] is not re-run
+# https://github.com/travis-ci/travis-ci/issues/1532
+branches:
+ except:
+   - /^v[0-9]/
+
 matrix:
   include:
      # Linux