Adds electron prebuild

Author: Daniel Kesler

.gitignore

@@ -3,3 +3,4 @@ binding.node
 build
 node_modules
 opened_fixtures
+prebuilds/

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@ronomon/opened",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "description": "Check if a file is open in another application on Windows, macOS and Linux.",
   "main": "index.js",
   "files": [
@@ -11,7 +11,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/ronomon/opened.git"
+    "url": "git+https://github.com/dckesler/opened.git"
   },
   "keywords": [
     "exclusive",
@@ -29,11 +29,16 @@
   },
   "homepage": "https://github.com/ronomon/opened#readme",
   "scripts": {
-    "postinstall": "node-gyp clean",
+    "install": "prebuild-install || node-gyp rebuild",
+    "prebuild-electron": "prebuild -t 7.0.0 -t 8.0.0 -t 9.0.0 -r electron",
     "test": "node test.js"
   },
   "dependencies": {
     "@ronomon/queue": "^3.0.0",
     "nan": "^2.11.0"
+  },
+  "devDependencies": {
+    "prebuild": "^10.0.0",
+    "prebuild-install": "^5.3.4"
   }
 }