electron的依赖需要更新，当前electron-prebuilt已经更新名为electron

[paseo]

使用node版本v6.11.x全局安装uxcore-tools失败，失败在electron-prebuilt的postinstall环节。当前electron-prebuilt的npm模块已经不维护，使用名为electron的npm模块代替，请更新相关依赖

> sauce-connect-launcher@0.13.0 postinstall /Users/paseo/.nvm/versions/node/v6.11.3/lib/node_modules/uxcore-tools/node_modules/sauce-connect-launcher
> node scripts/install.js


> electron-prebuilt@1.4.13 postinstall /Users/paseo/.nvm/versions/node/v6.11.3/lib/node_modules/uxcore-tools/node_modules/electron-prebuilt
> node install.js

/Users/paseo/.nvm/versions/node/v6.11.3/lib/node_modules/uxcore-tools/node_modules/electron-prebuilt/install.js:22
  throw err
  ^

Error: connect ETIMEDOUT 54.231.80.240:443
    at Object.exports._errnoException (util.js:1020:11)
    at exports._exceptionWithHostPort (util.js:1043:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1086:14)