exclude native modules from app.asar and sign them

electron-builder.yml

@@ -27,6 +27,8 @@ files:
 - '!**/{__pycache__,thumbs.db,.flowconfig,.idea,.vs,.nyc_output}'
 - '!**/{appveyor.yml,.travis.yml,circle.yml}'
 - '!**/{npm-debug.log,yarn.lock,.yarn-integrity,.yarn-metadata.json'
+asarUnpack:
+- 'node_modules/**/Release/*.node'
 extraResources:
 - builtin-plugins
 - extras