add react bootstrap 

```yarn add react-bootstrap bootstrap@3```

add code formatting 
```yarn add husky lint-staged prettier```

create .prettierrc file
```json 
{
  "printWidth": 80,
  "parser": "flow",
  "trailingComma": "es5",
  "singleQuote": true
}
```

add precommit to package.json scripts 
```"precommit": "lint-staged",```

add lint-staged to package.json
```"lint-staged": {
  "src/**/*.{js,jsx,json,css}": [
    "prettier --single-quote --write",
    "git add"
  ]
}
```