Add FSI directives to syntax highlighting
Add FSI directives to syntax highlighting

fsharp/fsharpbinding,Ming-Tang/fsharpbinding,Ming-Tang/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin,fsharp/xamarin-monodevelop-fsharp-addin,fsharp/fsharpbinding,Ming-Tang/fsharpbinding,fsharp/xamarin-monodevelop-fsharp-addin,fsharp/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin