试图让离子启动并运行但是会遇到很多错误.有小费吗？
Nates-MacBook-Pro:~ TheRainmaker$ npm install -g cordova ionic
npm ERR! Error: EACCES, mkdir '/usr/local/lib/node_modules/cordova'
npm ERR! { [Error: EACCES, mkdir '/usr/local/lib/node_modules/cordova']
npm ERR! errno: 3,
npm ERR! code: 'EACCES',
npm ERR! path: '/usr/local/lib/node_modules/cordova',
npm ERR! fstream_type: 'Directory',
npm ERR! fstream_path: '/usr/local/lib/node_modules/cordova',
npm ERR! fstream_class: 'DirWriter',
npm ERR! fstream_stack:
npm ERR! [ '/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23',
npm ERR! '/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:46:53',
npm ERR! 'Object.oncomplete (fs.js:107:15)' ] }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! System Darwin 14.0.0
npm ERR! …