ci(Travis): use correct package script for tests

Author: nodkz

.travis.yml

@@ -15,7 +15,7 @@ before_install: yarn global add greenkeeper-lockfile@1
 before_script: greenkeeper-lockfile-update
 after_script: greenkeeper-lockfile-upload
 script:
-  - yarn run coverage
+  - yarn run test
   - yarn run build
 after_success:
   - 'curl -Lo travis_after_all.py https://git.io/travis_after_all'