pre-WWDC example video

[heckj]

I'm sure I'll be distracted by announcements and updates coming to the Apple platforms with WWDC next week, but in the meantime I've made a ton of progress on Chart - now with adding axis at loosely fleshed out and functional, I made a short demo video to show off some of the progress.

Code to replicate and explore yourself (should you be inclined) is in a target I've added to this project, specifically to explore and experiment: ExampleChartView.swift. Clone the repo, open Package.swift with Xcode, and try it out. It's rough, and the API and structure of everything is far from set in stone, but it's coming along!