Release notes for linux

appveyor.yml

@@ -2,8 +2,6 @@ version: 0.10.{build}
 skip_tags: true
 image:
   - Ubuntu
-environment:
-  APPVEYOR_YML_DISABLE_PS_LINUX: true
 configuration: Release
 assembly_info:
   patch: true
@@ -20,12 +18,14 @@ dotnet_csproj:
   file_version: '{version}'
   informational_version: '{version}'
 build_script:
-- ps: .\build.ps1 --target=Default 
+- ps: |
+    if ($isWindows) {
+      .\build.ps1 --target=Default
+    }  
 - sh: ./build.sh --target=Linux
 test: off
 before_deploy:
 - ps: ${env:release_description} = ( Get-Content -LiteralPath BuildOutput/ReleaseNotes.txt -Encoding UTF8 ) -join "`n";
-- sh: release_description=$(cat BuildOutput/ReleaseNotes.txt)
 deploy:
 - provider: GitHub
   tag: v$(APPVEYOR_BUILD_VERSION)