Merge pull request #730 from atom/ns-explicit-node-gyp-dependency

Depend on node-gyp explicitly

Author: Nathan Sobo

package.json

@@ -1,7 +1,7 @@
 {
   "name": "atom-package-manager",
   "description": "Atom package manager",
-  "version": "1.18.2",
+  "version": "1.18.3-0",
   "license": "MIT",
   "repository": {
     "type": "git",
@@ -33,6 +33,7 @@
     "mv": "2.0.0",
     "ncp": "~0.5.1",
     "npm": "3.10.10",
+    "node-gyp": "3.4.0",
     "open": "0.0.4",
     "plist": "git+https://github.com/nathansobo/node-plist.git",
     "q": "~0.9.7",