Closes #1078

Description

The current Apollo Docs for setting up a GraphQL project causes an async and await error.

throw new Error('You must `await server.start()` before calling `server.' +
            ^
Error: You must `await server.start()` before calling `server.applyMiddleware()`

The way I fixed this is by creating a main function where it is asynchronous and await when we call server.start()

const main = async () => {
  const app = express();
  await server.start();
  server.applyMiddleware({ app });

  app.listen({ port: 4000 }, () =>
    console.log("Now browse to http://localhost:4000" + server.graphqlPath)
  );
};

main();

Add also when you install all the dependencies there is also missing package graphql

- npm install apollo-server-express express 
+ npm install apollo-server-express express graphql