Add Kickflip SDK and Kickflip Example to appropriate lists

Hello!

This pull requests adds the Kickflip SDKs and Example application to the Android-Aresenal list.

Kickflip is an SDK to make it incredibly easy to add live video streaming to mobile applications - you can learn more at https://kickflip.io

The SDK is Free and Open source, but the Kickflip API is paid, so I have added this to the paid section.

Thanks for doing this project! It's a super useful resource for me.

Rich