Allow __ function for no-underscore-dangle eslint rule

.eslintrc

@@ -30,6 +30,7 @@
     "filenames/match-regex": [2, "^[a-z0-9_]+$"],
     "import/no-commonjs": "error",
     "no-multiple-empty-lines": ["error", { "max": 1 }],
-    "promise/catch-or-return": "error"
+    "promise/catch-or-return": "error",
+    "no-underscore-dangle": ["error", { "allow": ["__"]}],
   }
 }