Proper versioning is hard

appveyor.yml

@@ -34,7 +34,7 @@ after_build:
     if ($Env:APPVEYOR_REPO_TAG -eq "true") {
       nuget pack src\Discord.Net\Discord.Net.nuspec -OutputDirectory "artifacts" -properties suffix=""
     } else {
-      nuget pack src\Discord.Net\Discord.Net.nuspec -OutputDirectory "artifacts" -properties suffix="build-$Env:BUILD"
+      nuget pack src\Discord.Net\Discord.Net.nuspec -OutputDirectory "artifacts" -properties suffix="-build-$Env:BUILD"
     }
 - ps: Get-ChildItem artifacts\*.nupkg | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }