Update README.md

[wangcj05]

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Pull Request Description

What issue does this change request address? (Use "#" before the issue to link it, i.e., #42.)

What are the significant changes in functionality due to this change request?

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For Change Control Board: Change Request Review

The following review must be completed by an authorized member of the Change Control Board.

• 1. Review all computer code.
• 2. If any changes occur to the input syntax, there must be an accompanying change to the user manual.
• 3. Make sure the Python code and commenting standards are respected (camelBack, etc.) - See on the wiki for details.
• 4. Regression tests have to complete successfully.
• 5. If significant functionality is added, there must be tests added to check this. Tests should cover all possible options. Multiple short tests are preferred over one large test.
• 6. The merge request must reference an issue. If the issue is closed, the issue close checklist shall be done.