Explicit 'node-gyp rebuild'.

Author: LeviticusMB

package.json

@@ -30,14 +30,16 @@
     "find-java-home": "1.1.0",
     "glob": "7.1.6",
     "lodash": "^4.17.21",
-    "nan": "2.14.1"
+    "nan": "2.14.1",
+    "node-gyp": "^9.1.0"
   },
   "devDependencies": {
     "chalk": "2.4.1",
     "nodeunit": "0.11.3",
     "when": "3.7.8"
   },
   "scripts": {
+    "install": "node-gyp rebuild",
     "test": "node testRunner.js",
     "postinstall": "node postInstall.js"
   },