Forked v2.0.0 released

[mrbiggred]

Hello everyone. Just a heads up that I have forked the BEMCheckBox and created a v2.0.0 release. The v2.0.0 release has all the fixes in this repo along with some other updates in the forked repo.

Please note is does have a potential breaking change. I decided to keep the new checkbox event names. More details can be found in #104 and saturdaymp#2.

I have not pushed a new CocoaPods release. The last CocoaPods release was in 1.4.1. If this is something people are interested in please let me know and I'll look into it. My main goal is to do another release of the Xamarin wrapper of the BEMCheckBox.

Truth be told I'm not very familiar with Xcode/Swift development so if anyone notices any issues with my fork please let me know by opening an issue or a pr.

@Boris-Em, or anyone else with access to this repo, I would be happy to integrate my changes back into this repo if you would like. Thank you @Boris-Em for creating BEMCheckBox. Myself, and likely several others, really appreciate it.