D:\nodeWorkspace\Imooc>npm install bower -g

npm WARN deprecated bower@1.8.0: ..psst! While Bower is maintained, we recommend

 Yarn and Webpack for *new* front-end projects! Yarn's advantage is security and

 reliability, and Webpack's is support for both CommonJS and AMD projects. Curre

ntly there's no migration path but we hope you'll help us figure out one.

C:\Users\ljk\AppData\Roaming\npm\bower -> C:\Users\ljk\AppData\Roaming\npm\node_

modules\bower\bin\bower

bower@1.8.0 C:\Users\ljk\AppData\Roaming\npm\node_modules\bower

D:\nodeWorkspace\Imooc>npm install bootstrap

bootstrap@3.3.7 node_modules\bootstrap

D:\nodeWorkspace\Imooc>