npm install --save react-bootstrap-spinner

import React, { Component } from 'react'

//import ReactSpinner from react-bootstrap-spinner
import ReactSpinner from 'react-bootstrap-spinner'

//import Spinner css 
import 'react-bootstrap-spinner/dist/css/_spinners.css'
//import scss ( Note - To use .scss your project should have `node-sass`)
// import 'react-bootstrap-spinner/dist/css/_spinners.scss' 

class Example extends Component {
  render () {
    return (
      //And use wherever you want...
      <ReactSpinner type="border" color="primary" size="5" />
    )
  }
}