Merge pull request #3959 from tschaub/release-tweaks

Minor updates to release procedure.

.travis.yml

@@ -19,3 +19,7 @@ script: "make ci"
 after_success:
   - "make test-coverage"
   - "cat coverage/lcov.info | ./node_modules/.bin/coveralls"
+
+branches:
+  only:
+    - master

tasks/publish.sh

@@ -95,6 +95,7 @@ main() {
   checkout_tag ${1}
   assert_version_match ${1}
   rm -rf ${BUILDS}
+  npm install
   build_js ${PROFILES}
   build_css
   npm publish