Update readme and PR template.

.github/pull_request_template.md

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-*Add your PR comments here.*
+**Important:** I realize Remotely is currently lacking in unit and integration tests.  I was pretty newb when I wrote a lot of the foundational code, and I haven't had time to refactor and restructure.
+
+I'd like to start changing that, though. Enough people are starting to depend on Remotely that I want to make sure it's maintainable and lives on.  So I need every PR to include automated tests that prove the new functionality is working.
+
+If you have the time and the desire, it would also be incredibly helpful if you included some new tests against services touched by your changes.  I know that this is my mess you're cleaning up, so I thank you wholeheartedly for your help.  The people who use Remotely appreciate it too. :)
+
+*Delete the above and add your PR comments here and delete the above.*
 
 
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README.md

@@ -2,6 +2,7 @@
 A remote control and remote scripting solution, built with .NET Core, SignalR Core, and WebRTC.
 
 [![Build Status](https://dev.azure.com/translucency/Remotely/_apis/build/status/Remotely-ReleaseBuild?branchName=master)](https://dev.azure.com/translucency/Remotely/_build/latest?definitionId=17&branchName=master)
+![GitHub Build](https://github.com/lucent-sea/Remotely/workflows/GitHub%20Build/badge.svg)
 
 ## Sponsor This Project
 Ongoing via GitHub: https://github.com/sponsors/lucent-sea