message: Add deployment task.
diff: "scripts": {
  "test": "npm test",
  "start": "start-storybook -p 6006",
  - "build-storybook": "build-storybook"
  + "export": "build-storybook -c .storybook -o .out",
  + "deploy": "storybook-to-ghpages"
  },
  "repository": {
  "type": "git",
  "@storybook/addon-actions": "^3.2.6",
  "@storybook/addon-links": "^3.2.6",
  "@storybook/react": "^3.2.8",
  + "@storybook/storybook-deployer": "^2.0.0",
  "eslint": "^4.7.0"
  },
  "dependencies": {
  