Merge pull request atom#18071 from atom/dw-fix-appveyor-builds

Pin @atom/nsfw to 1.0.18

Author: daviwil

package-lock.json

@@ -14,7 +14,7 @@
   "license": "MIT",
   "electronVersion": "2.0.9",
   "dependencies": {
-    "@atom/nsfw": "^1.0.19",
+    "@atom/nsfw": "1.0.18",
     "@atom/source-map-support": "^0.3.4",
     "@atom/watcher": "1.0.8",
     "about": "file:packages/about",