Hook into autocomplete Providers

[alexchee]

It'll be nice to be able to use the providers to have better grammar support (https://github.com/atom-community/autocomplete-plus/wiki/Autocomplete-Providers).

[alexchee]

Probably be easier to just fork off of autocomplete-plus and modify it to do inline suggestions.
https://github.com/alexchee/atom-autocomplete-inline-plus

If I only had the ⌚...