Use gzip compression and security headers

package.json

@@ -50,12 +50,14 @@
     "babel-preset-env": "^1.7.0",
     "babel-preset-minify": "^0.4.3",
     "babel-preset-react": "^6.24.1",
+    "compression": "^1.7.3",
     "css-loader": "^0.28.11",
     "dotenv-webpack": "^1.5.7",
     "express": "^4.16.3",
     "favicons-webpack-plugin": "0.0.9",
     "file-loader": "^1.1.11",
     "fs-extra": "^6.0.1",
+    "helmet": "^3.13.0",
     "html-webpack-plugin": "^3.2.0",
     "husky": "^1.0.0-rc.9",
     "image-webpack-loader": "^4.3.0",