feat(ci): run tests on appveyor

Author: jaredcnance

Build.ps1

@@ -4,6 +4,9 @@ $revision = "{0:D4}" -f [convert]::ToInt32($revision, 10)
 dotnet restore .\src\JsonApiDotNetCore\JsonApiDotNetCore.csproj
 dotnet build .\src\JsonApiDotNetCore -c Release
 
+dotnet test ./test/JsonApiDotNetCoreExampleTests/JsonApiDotNetCoreExampleTests.csproj
+dotnet test ./test/NoEntityFrameworkTests/NoEntityFrameworkTests.csproj
+
 echo "APPVEYOR_REPO_TAG: $env:APPVEYOR_REPO_TAG"
 echo "VERSION-SUFFIX: alpha1-$revision"