Provide TypeScript Definition

[iddan]

Hey, thank you for creating this great package.
It would be really nice if it could be shipped with TypeScript definitions for the TypeScript folks in the crowd.

[mheap]

Hey @iddan,

This is a great suggestion, but not one that I know where to start. Would you be open to submitting a PR to add types?

[iddan]

Hey @mheap, I created a pull request with the types definition I'm using