Adding example simulation inputs used in the REXEE paper

[codecov[bot]]

Codecov Report

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

Project coverage is 52.95%. Comparing base (7ebe1a5) to head (958e326).

:exclamation: Current head 958e326 differs from pull request most recent head 0a511ba. Consider uploading reports for the commit 0a511ba to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #38 +/- ## ======================================= Coverage 52.95% 52.95% ======================================= Files 7 7 Lines 1571 1571 ======================================= Hits 832 832 Misses 739 739 ```

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