OSX 10.11上，全局安装electron的问题
user@userdeMacBook-Pro:~/$ sudo npm install -g electron
/usr/local/bin/electron -> /usr/local/lib/node_modules/electron/cli.js
> electron@1.4.5 postinstall /usr/local/lib/node_modules/electron
> node install.js
Downloading electron-v1.4.5-darwin-x64.zip
[============================================>] 100.0% of 42.06 MB (801.05 kB/s)
/usr/local/lib/node_modules/electron/install.js:22
throw err
^
Error: EACCES: permission denied, link '/usr/local/lib/node_modules/electron/electron-tmp-download-3321-1478482599943/electron-v1.4.5-darwin-x64.zip' -> '/Users/user/.electron/electron-v1.4.5-darwin-x64.zip'
at Error (native)
npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "electron"
npm ERR! node v6.9.1
npm ERR! npm v4.0.1
npm ERR! code ELIFECYCLE
npm ERR! electron@1.4.5 postinstall: `node install.js`
npm ERR! Exit status 1
解决方法：
rm -rf ~/.electron mkdir ~/.electron chmod 777 ~/.electron/ sudo npm -g install electron