message: build: add doc build script
diff: "cov": "father test --coverage",
  "help": "father help",
  "precommit": "father pre-commit",
  - "pub:doc": "father doc build && now --prod"
  + "build:doc": "father doc build",
  + "pub:doc": "now --prod"
  },
  "dependencies": {
  "react-use": "^10.6.2"
  