this lib is not working correctly with Typescript

[KseniaKapnik]

There is no declaration file for this package.
Causes error in case of using with typescript import.
The types field is missed in package.json, it could be something like:

"types": "./lib/lawnchair.d.ts",

The lawnchair.d.ts file itself need only to declare Lawnchair

import 'lawnchair'

declare module 'lawnchair' {
  export default function Lawnchair(config: Object, callback: Function): void;
}

[MarkMYoung]

Thank you for this, @KseniaKapnik. I you would make a pull request with those changes, I would be happy to merge it. Otherwise, I'll have to make the pull request as time permits.