Autocomplete for Dependencies not working

[adriaanp]

Getting a weird list with only 5 EntityFramework options when start typing in {"dependencies" : ""}

[shirhatti]

I believe the issue is that we are still retrieving the completions from MyGet. Since the bits are now available on NuGet we should update the API endpoint we are accessing

https://github.com/OmniSharp/Kulture/blob/master/Completions.py#L123