branch and tag cannot combine

Author: jcouyang

circle.yml

@@ -19,7 +19,6 @@ test:
     - bash <(curl -s https://codecov.io/bash)
 deployment:
   production:
-    branch: master
     tag: /v[0-9]+(\.[0-9]+)*/
     commands:
       - ./ci/npm-login.sh