Add version to build and the archived asar app (#854)

package.json

@@ -15,8 +15,8 @@
     "roughjs": "4.0.4",
     "stacktrace-js": "2.0.2"
   },
-  "description": "",
   "devDependencies": {
+    "asar": "2.1.0",
     "@testing-library/jest-dom": "5.1.1",
     "@testing-library/react": "9.4.1",
     "@types/jest": "25.1.3",
@@ -80,8 +80,10 @@
   "main": "src/index.js",
   "name": "excalidraw",
   "scripts": {
-    "build": "react-scripts build",
-    "build-node": "./scripts/build-node.js",
+    "build:app": "react-scripts build",
+    "build:zip": "node ./scripts/build-version.js",
+    "build": "npm run build:app && npm run build:zip",
+    "build-node": "node ./scripts/build-node.js",
     "eject": "react-scripts eject",
     "fix": "npm run fix:other && npm run fix:code",
     "fix:code": "npm run test:code -- --fix",