Updated package name

package.json

@@ -120,6 +120,7 @@
   "homepage": "./",
   "build": {
     "appId": "repertory-ui",
+    "artifactName": "${productName}_${version}_${os}_${arch}.${ext}",
     "files": [
       "./electron.js",
       "./src/constants.js",
@@ -130,6 +131,9 @@
     "linux": {
       "icon": "./build/icon.icns"
     },
+    "mac": {    
+      "icon": "./build/icon.icns"
+    },
     "win": {
       "icon": "./build/icon.ico"
     },