Create appveyor.yml
Create appveyor.yml

Copied from https://raw.githubusercontent.com/madskristensen/FileNesting/master/appveyor.yml
flcdrg/VsShowMissing,modulexcite/VsShowMissing,flcdrg/VsShowMissing,flcdrg/VsShowMissing,flcdrg/VsShowMissing