feat(HdrHistogram#66): Document Unit Tests and Benchmarks (HdrHistogram#123)

* plan(HdrHistogram#66): initial brief from issue

* plan(HdrHistogram#66): review brief

* plan(HdrHistogram#66): create task breakdown

* feat(HdrHistogram#66): implement tasks

* feat(HdrHistogram#66): complete implementation

Author: leecampbell-codeagent

README.md

@@ -261,6 +261,25 @@ If you do choose to contribute, please first raise an issue so we are not caught
 Next can you please ensure that your PR (Pull Request) has a comment in it describing what it achieves and the issues that it closes.
 Ideally if it is fixing an issue or a bug, there would be a Unit Test proving the fix and a reference to the Issues in the PR comments.
 
+## Development
+
+### Running the Tests
+
+The unit tests can be run using `dotnet test`.
+
+```sh
+dotnet test ./HdrHistogram.UnitTests/HdrHistogram.UnitTests.csproj -v q -c Release
+```
+
+### Running the Benchmarks
+
+The benchmarks are run using `dotnet run` in Release mode.
+A full benchmark run may take several minutes.
+
+```sh
+dotnet run -c Release --project ./HdrHistogram.Benchmarking/HdrHistogram.Benchmarking.csproj
+```
+
 ---
 
 ## HdrHistogram Details