Adding Typescript support

[mk5med]

Thanks for creating this library, it worked straight away and I was able to quickly add the input components into my app.
When integrating your library I created a custom type definition file based on your source to allow the language server to detect your component API's.

Other developers will likely come across this requirement as well in their projects if they use typescript. Are there upcoming plans to add a definition file in a future release?

Thanks.