chore(package): update eslint-plugin-vue to version 6.1.1

Closes #593

Author: greenkeeper[bot]

package.json

@@ -101,7 +101,7 @@
     "eslint-loader": "^2.0.0",
     "eslint-plugin-babel": "^5.1.0",
     "eslint-plugin-prettier": "^2.6.0",
-    "eslint-plugin-vue": "^4.5.0",
+    "eslint-plugin-vue": "^6.1.1",
     "extract-text-webpack-plugin": "4.0.0-beta.0",
     "file-loader": "^1.1.11",
     "friendly-errors-webpack-plugin": "^1.7.0",