Bump eslint from 3.19.0 to 4.18.2

Bumps [eslint](https://github.com/eslint/eslint) from 3.19.0 to 4.18.2.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v3.19.0...v4.18.2)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -43,7 +43,7 @@
     "babel-preset-stage-2": "^6.24.1",
     "babel-runtime": "^6.23.0",
     "css-loader": "^0.28.2",
-    "eslint": "^3.19.0",
+    "eslint": "^4.18.2",
     "eslint-plugin-html": "^2.0.3",
     "extract-text-webpack-plugin": "^2.0.0",
     "file-loader": "^0.11.1",