First you do this
npm install ng2-bootstrap bootstrap --save
in your console to download module boostrap on root the projects, find app.module in src/app/app.module.ts and later add the components boostrap, it is thus:
import { AlertModule } from 'ng2-bootstrap/ng2-bootstrap';
...
@NgModule({
...
imports: [AlertModule, ... ],
...
})
Go to root projects, and open file angular-cli.json y put in where they go styles, the next:
"styles": [
"styles.css",
"../node_modules/bootstrap/dist/css/bootstrap.min.css"
],
this is to compile the css, when will you run the command ng serve, also you can put others file css and will compiled also.
At this time, you can use the components of boostrap in the html template the any components
<alert type="success">hello</alert>
to see more, visit the next link: http://valor-software.com/ng2-bootstrap/#/
and... done! XD, sorry for my bad english, I hope this can help you
Note: restart ng serve after all this