debug(build.ps1): continuing to figure out why appveyor is not packing to a pre-release

Author: jaredcnance

Build.ps1

@@ -5,6 +5,7 @@ dotnet restore .\src\JsonApiDotNetCore\JsonApiDotNetCore.csproj
 dotnet build .\src\JsonApiDotNetCore -c Release
 
 echo "APPVEYOR_REPO_TAG: $env:APPVEYOR_REPO_TAG"
+echo "VERSION-SUFFIX: alpha1-$revision"
 
 If($env:APPVEYOR_REPO_TAG) { dotnet pack .\src\JsonApiDotNetCore -c Release -o .\artifacts }
 Else { dotnet pack .\src\JsonApiDotNetCore -c Release -o .\artifacts --version-suffix=alpha1-$revision }