Merge pull request #510 from ldennington/add-ui-testing-instructions

Clean up `README.md` and `CONTRIBUTING.md`

Author: mjcheetham

CONTRIBUTING.md

@@ -24,6 +24,11 @@ This helps us coordinate and reduce duplication.
 0. Make sure the tests pass on your machine: `dotnet test`
 0. Create a new branch: `git switch -c my-branch-name`
 0. Make your change, add tests, and make sure the tests still pass
+0. For UI updates, test your changes by executing a `dotnet run` in applicable UI-related project directories:
+    - `Atlassian.Bitbucket.UI.Avalonia`
+    - `GitHub.UI.Avalonia`
+    - `Atlassian.Bitbucket.UI.Windows`
+    - `GitHub.UI.Windows`
 0. Push to your fork and [submit a pull request][pr]
 0. Pat your self on the back and wait for your pull request to be reviewed and merged.
 

README.md

@@ -35,8 +35,7 @@ Proxy support|✓|✓|✓
 
 **Notes:**
 
-(\*) Debian package offered but not yet available on an official Microsoft feed.
-Fedora packages planned but not yet available.
+(\*) Fedora packages planned but not yet available.
 
 ## Download and Install