Fix appveyor

Author: diev

appveyor.yml

@@ -17,6 +17,12 @@ dotnet_csproj:
   informational_version: '{version}'
 install:
 - ps: >-
+    [XML]$xml = Get-Content "$env:APPVEYOR_PROJECT_NAME\$env:APPVEYOR_PROJECT_NAME.csproj"
+
+    $env:VERSION = ($xml.Project.PropertyGroup.Version).Trim()
+
+    Update-AppveyorBuild -Version "$env:VERSION.$env:APPVEYOR_BUILD_NUMBER"
+
     $CommitDateTime = [datetime]::Parse($env:APPVEYOR_REPO_COMMIT_TIMESTAMP)
 
     $env:BuildDate = $CommitDateTime.ToString('yyyy-MM-dd')