Update Readme.md (#3524)

* Update Readme.md

* Update Tests/Readme.md

Tests/Readme.md

@@ -37,6 +37,13 @@ run against cloud are located in the Scripts folder. Currently we have:
 * DeployApps.ps1 - imports the apps located in TestApps and links them to the specified cluster.
 * RemoveApps.ps1 - removes all Atlas App Services apps for the specified project.
 
+## Note on logs
+
+Methods like `Console.WriteLine`, `Debug.WriteLine`, `TestContext.WriteLine` are unreliable in `NUnit`, so if you need to get logs it's recommended to set the default Realm logger to use a file logger, like this:
+```
+Logger.Default = Logger.File(filePath);
+```
+
 ## Unity
 
 The Unity tests are somewhat special, not only because they don't use MSBuild and Visual Studio to build and run, but because they need to be run
@@ -87,4 +94,4 @@ UWP certficates are generated for 1 year at a time. This means that they need to
 4. Call `[System.Convert]::ToBase64String([IO.File]::ReadAllBytes("$pwd\Tests\Tests.UWP\Tests.UWP_TemporaryKey.pfx")) | Set-Clipboard` from the repo root. This will base64 encode the certificate and copy it to clipboard.
 5. Go to `https://github.com/realm/realm-dotnet/settings/secrets/actions` and update the following secrets
   * `BASE64_ENCODED_PFX` with the content of the certificate we copied in 4.
-  * `PFX_PASSWORD` with the password generated in 3.
+  * `PFX_PASSWORD` with the password generated in 3.