Documentation about referencing and/or including FSharp.Core.dll

[dsyme]

Based on #258, I added some documentation about FSharp.Core.dll

[adamkennedy]

Based on this documentation, I'm going to do some investigation and see which situation applies to my case and how I ended up this way. I might pull in a colleague of mine as well.

I'm quite surprised I could end up blowing up this way with a default setup (typical F# SDK install, vanilla F# project in Visual Studio, and the production FSharp.Compiler.Service NuGet package.

[adamkennedy]

A couple of comments on following the documentation.

"HostedCompiler.exe" wasn't immediately clear (though it was by the end of the reading). Perhaps "YourHostedCompiler.exe" ?

Second, after configuring the hosted compiler project to make use of the "FSharp.Core for F# 3.1, Microsoft signed" I had some clashes with FSharp.Core when building, because the default setup of other F# projects in the same solution were linking to the system FSharp.Core library.

It might be worth adding a note to change the FSharp.Core references of other projects in the same solution to match (library projects, test projects etc)

[dsyme]

Could you send two pull requests for these if possible? thanks

Edit here: https://github.com/fsharp/FSharp.Compiler.Service/blob/master/docs/content/corelib.fsx