Adjust appveyor.yml
Adjust appveyor.yml

Lookinng at this failure https://ci.appveyor.com/project/fsgit/fsharpbinding/build/1.0.224 it seems emacs is not being downloaded at the start of the AppVeyor build

I couldn't see "emacs-24.4-bin-i686-pc-mingw32.7z" but I could see "emacs-24.4-bin-i686-mingw32.7z" so trying that
Ming-Tang/fsharpbinding,fsharp/xamarin-monodevelop-fsharp-addin,fsharp/fsharpbinding,fsharp/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin,Ming-Tang/fsharpbinding,fsharp/fsharpbinding,Ming-Tang/fsharpbinding,nosami/xamarin-monodevelop-fsharp-addin,fsharp/xamarin-monodevelop-fsharp-addin