Bump electron builder

gulpfile.js

@@ -275,6 +275,6 @@ gulp.task('sync-meta', function() {
   appPackageJson.version = packageJson.version;
   appPackageJson.description = packageJson.description;
   appPackageJson.author = packageJson.author;
-  appPackageJson.license = packageJson.license;
+  appPackageJson.license = "Apache-2.0";
   fs.writeFileSync('./src/package.json', JSON.stringify(appPackageJson, null, '  ') + '\n');
 });

package.json

@@ -8,10 +8,13 @@
     "name": "Yuya Ochiai",
     "email": "[email protected]"
   },
-  "license": "Apache-2.0",
   "engines": {
     "node": ">=4.2.0"
   },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/mattermost/desktop.git"
+  },
   "scripts": {
     "install": "cd src && npm install",
     "postinstall": "npm run build",
@@ -36,7 +39,7 @@
     "chai": "^3.5.0",
     "chai-as-promised": "^5.3.0",
     "devtron": "^1.3.0",
-    "electron-builder": "5.2.1",
+    "electron-builder": "7.3.0",
     "electron-connect": "~0.3.9",
     "electron-packager": "^7.0.1",
     "electron-prebuilt": "1.2.8",