fix(package): update eslint to version 6.7.2

Closes #182

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
     "babel-preset-es2015": "^6.18.0",
     "babel-preset-react": "^6.16.0",
     "babel-preset-stage-0": "^6.16.0",
-    "eslint": "^3.8.1",
+    "eslint": "^6.7.2",
     "eslint-config-superawesome": "^1.0.0",
     "eval": "^0.1.1",
     "frontmatter-loader": "0.0.1",