Merge pull request #575 from McGiverGim/upgrade_nwbuilder

Upgrade NwBuilder to version 3.7.4

Author: blckmn

package.json

@@ -40,7 +40,7 @@
     "gulp-yarn": "^3.0.0",
     "gulp-zip": "^5.0.0",
     "inflection": "1.12.0",
-    "nw-builder": "^3.5.7",
+    "nw-builder": "^3.7.4",
     "os": "^0.1.1",
     "rpm-builder": "^1.0.0",
     "temp": "^0.9.0",