add to readme

[peterdudfield]

Pull Request

Description

Copy over mutliple clients diagrams from #73 Fixes #

How Has This Been Tested?

Looked at readme on that branch

• [ ] Yes

Checklist:

• [ ] My code follows OCF's coding style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (2d1b602) 98.01% compared to head (6eb3cab) 98.01%. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #91 +/- ## ======================================= Coverage 98.01% 98.01% ======================================= Files 12 12 Lines 353 353 ======================================= Hits 346 346 Misses 7 7 ```

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