npm ERR! shasum check failed for C:\Users\MM\AppData\Local\Temp\npm-10900-415697c8\registry.npmjs.org\rcedit\-\rcedit-0.7.0.tgz
npm ERR! Expected: 560b2920165034a135316e6a111f8274b9cec521
npm ERR! Actual: a5a7e0aff957ae75cc7064db9ba8f59daaba6649
安装electron packager的时候出了错。换一个国内NPM源就好了：
npm config set registry="http://registry.cnpmjs.org"
