How to build React using Webpack package.json

package.json

{
    "name": "webpack-poc",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "scripts": {
        "test": "echo \"Error: no test specified\" && exit 1"
    },
    "repository": {
        "type": "git",
        "url": "git+https://github.com/rohanBagchi/webpack-poc.git"
    },
    "author": "",
    "license": "ISC",
    "bugs": {
        "url": "https://github.com/rohanBagchi/webpack-poc/issues"
    },
    "homepage": "https://github.com/rohanBagchi/webpack-poc#readme",
    "devDependencies": {
        "webpack": "^2.5.1"
    },
    "dependencies": {
        "babel-core": "^6.24.1",
        "babel-loader": "^7.0.0",
        "babel-preset-react": "^6.24.1",
        "react": "^15.5.4",
        "react-dom": "^15.5.4"
    }
}