allow underscore

.eslintrc.json

@@ -45,7 +45,6 @@
     "no-spaced-func": 2,
     "no-trailing-spaces": 2,
     "no-undef-init": 2,
-    "no-underscore-dangle": 2,
     "no-unused-expressions": 2,
     "no-use-before-define": 0,
     "no-var": 2,