Building Node.js application using Einstein Vision on Heroku using React

React (https://facebook.github.io/react/) is one of the fastest maturing frontend JavaScript libraries for building component-based single page applications. This section will cover a hands-on tutorial to build a user interface using React to upload a file and get prediction using Einstein Vision on Heroku. We will use Express as a middleware to authenticate to the Prediction API and make API calls to the Einstein Vision Services. The final product can be viewed at https://powerful-bastion-25704.herokuapp.com/. It's a public Node.js app sitting on Heroku that accepts a flower image (at this point, it loads only roses, lilies, and lotuses of size less than 1 MB) and recognizes the image intelligently. The app uses the model we built in the Explore Einstein Vision APIs section, which is trained to understand whether an uploaded flower image is of a rose, a lily, or a lotus. We will cover applicable Node.js concepts, ES6...