Skip first time experience on Appveyor

appveyor.yml

@@ -1,4 +1,4 @@
-init:
+init:
   - git config --global core.autocrlf true
 install:
    - ps: Install-Product node 6.9.2 x64
@@ -25,6 +25,10 @@ artifacts:
     type: NuGetPackage
 #  - ps: .\build.ps1
 clone_depth: 1
+environment:
+  global:
+    DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+    DOTNET_CLI_TELEMETRY_OPTOUT: 1
 test_script:
   - dotnet restore
   - ps: Push-Location