enable RDP on appveyor for debugging

Author: ianfixes

appveyor.yml

@@ -19,9 +19,6 @@ before_test:
 test_script:
   # https://help.appveyor.com/discussions/problems/5170-progresspreference-not-works-always-shown-preparing-modules-for-first-use-in-stderr
   - ps: $ProgressPreference = "SilentlyContinue"
-  - bundle exec rubocop --version
-  - bundle exec rubocop -D .
-  - bundle exec rspec
-  - cd SampleProjects\TestSomething
-  - bundle install
-  - bundle exec arduino_ci_remote.rb
+
+on_finish:
+  - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))