fix eslint config error when run gulp scripts

akveo#161

fix eslint config error when run gulp scripts in win10 or does not assign any custom eslint config.(mac os work fine)

for example: if you clone blur-admin run in visual studio (restore all package) or any way run gulp scripts will reappear this error.

blur-admin\node_modules.1.10.3@eslint\lib\config\config-file.js:332
throw e;
^

Error: Cannot read config package: eslint-config-defaults/configurations/eslint
Error: Cannot find module 'eslint-config-defaults/configurations/eslint'

Author: zff1222

Diff for: package.json

@@ -44,5 +44,10 @@
   },
   "scripts": {
     "postinstall": "bower install"
+  },
+  "eslintConfig": {
+    "globals": {
+      "window": true
+    }
   }
 }