Use prebuild-install.

Author: octalmage

package.json

@@ -6,7 +6,7 @@
   "typings": "index.d.ts",
   "scripts": {
     "test": "node test/all.js",
-    "install": "prebuild --install"
+    "install": "prebuild-install || node-gyp rebuild"
   },
   "repository": {
     "type": "git",
@@ -38,9 +38,10 @@
   "homepage": "https://github.com/octalmage/robotjs",
   "dependencies": {
     "nan": "^2.2.1",
-    "prebuild": "v6.1.0"
+    "prebuild-install": "^2.1.1"
   },
   "devDependencies": {
-    "tape": "^3.5.0"
+    "tape": "^3.5.0",
+    "prebuild": "v6.1.0",
   }
 }