Intellisense not working for packages with Ionide in VSCode

I am just getting started with FSharp and am trying to work in VSCode on my mac. I followed all the installation instructions here https://github.com/dotnet/netcorecli-fsc/wiki/.NET-Core-SDK-1.0.1

However, Inoide doesn't seem to be able to pick up any of the packages I've added. Here's an example:

As you can see, the plugin is working fine as I am getting the type information, but it will not get the package. Hovering over red squiggly shows errorThe namespace of module 'FsUnit' is not defined

I am running dotnetcore 1.0.3 and inoide-fsharp 2.25.10