var Upload = require('rc-upload-s3');
var React = require('react');
var AWS = require('aws-sdk');
// use a valid credentials object from aws-sdk
var credentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId: '<identityPoolId>',
  IdentityId: '<IdentityId>',
  Logins: { 'cognito-identity.amazonaws.com': '<Token>' }
});
var s3params = {Metadata: { uploader: 'react-upload-s3' }}; // tag upload files with uploader used
React.render(<Upload action="bucketName" credentials={credentials} params={s3params} />, container);