TakeTuesday E01: nvim-cmp

In our first episode of #TakeTuesday, we explore the wonderful completion plugin "nvim-cmp". You'll learn how to configure, customize and even create your own sources for nvim-cmp.
CORRECTION:
Sorry, I set that cmp.setup.buffer ADDs to global setup, but it actually OVERRIDEs global setup. See github.com/hrs... . Can be see at 12:30
Some important links:
Nvim-cmp: github.com/hrs...
My Dotfiles: github.com/tjd...
My nvim-cmp setup: github.com/tjd...
Github issues source: github.com/tjd...
Related plugins
github.com/ms-...
github.com/neo...