message: Add polymer-bundler as direct dependency of cli
diff: "plylog": "^0.4.0",
  "polymer-analyzer": "3.0.0-pre.22",
  "polymer-build": "3.0.0-pre.10",
  + "polymer-bundler": "^4.0.0-pre.4",
  "polymer-linter": "^3.0.0-pre.3",
  "polymer-project-config": "^3.13.0",
  "polyserve": "0.27.1",
  