Updated TypeScript import

[telmotrooper]

I'm pretty sure somewhere along the way you guys changed how the middleware is exported and your old TypeScript import syntax no longer works. I updated the README file with the import that works with the current version (as that is what has worked in my current project).

It might be a relevant that I'm on (current) TypeScript 3.1.6.

[Abazhenov]

Thanks for the PR, I'm also on typescript 3.1.6 and I'm actually not able to use import asyncHandler from 'express-async-handler'. Perhaps a setting in your tsconfig is preventing you from using import * as asyncHandler from 'express-async-handler'?

[fiznool]

I believe you need the allowSyntheticDefaultImports or esModuleInterop flags to be set to true in the tsconfig.json file to support the following syntax:

import asyncHandler from 'express-async-handler'

Otherwise, you have to use this:

import * as asyncHandler from 'express-async-handler'

[Abazhenov]

Thanks!