Switch from deoplete to ncm2
Switch from deoplete to ncm2

I originally switched back to the deoplete completion manager because
nvim completion manager was deprecated and ncm2, it's replacement,
wasn't fully baked yet.

That has changed now, and I like how ncm2 does things.

bronzehedwick/dotfiles,bronzehedwick/dotfiles,bronzehedwick/dotfiles,bronzehedwick/dotfiles