index.js

import React from 'react';
import { render } from 'react-dom';
import ApolloClient from 'apollo-boost';
import { ApolloProvider } from 'react-apollo';

// Pass your GraphQL endpoint to uri
const client = new ApolloClient({
  uri: 'https://nx9zvp49q7.lp.gql.zone/graphql'
});

const ApolloApp = () => (
  <ApolloProvider client={client}>
    <App />
  </ApolloProvider>
);

render(ApolloApp, document.getElementById('root'));

Hi there! I encountered an issue when running the above code: Functions are not valid as a React child
Fixed by using jsx component in render method. See gist.