build: reset version to 4.1.0-beta.0 in preparation for 4.1.0 stable release

VERSION

@@ -1 +1 @@
-4.0.8
+4.1.0-beta.0

atom/browser/resources/mac/Info.plist

@@ -17,9 +17,9 @@
   <key>CFBundleIconFile</key>
   <string>electron.icns</string>
   <key>CFBundleVersion</key>
-  <string>4.0.8</string>
+  <string>4.1.0-beta.0</string>
   <key>CFBundleShortVersionString</key>
-  <string>4.0.8</string>
+  <string>4.1.0-beta.0</string>
   <key>LSApplicationCategoryType</key>
   <string>public.app-category.developer-tools</string>
   <key>LSMinimumSystemVersion</key>

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "electron",
-  "version": "4.0.8",
+  "version": "4.1.0-beta.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "electron",
-  "version": "4.0.8",
+  "version": "4.1.0-beta.0",
   "repository": "https://github.com/electron/electron",
   "description": "Build cross platform desktop apps with JavaScript, HTML, and CSS",
   "devDependencies": {