bumping eslint dependencies

this make eslint --fix work again with eslint-plugin-vue

Author: LinusBorg

template/package.json

@@ -30,8 +30,8 @@
   },
   "devDependencies": {
     {{#lint}}
-    "babel-eslint": "^7.1.1",
-    "eslint": "^3.19.0",
+    "babel-eslint": "^8.2.1",
+    "eslint": "^4.15.0",
     "eslint-friendly-formatter": "^3.0.0",
     "eslint-loader": "^1.7.1",
     "eslint-plugin-vue": "^4.0.0",