Added a link to CONTRIBUTING.md in the Development and Testing section of the README.
Checklist
[X] Under the title in the "Development and Testing" section in the README.md, add the following:
"To make a contribution, please read our Contributing Guidelines in CONTRIBUTING.md"
[X] Make sure the sentence above contains a Markdown link to the repo's CONTRIBUTING.md file.
Issue
Fixes #383
Description
Added a link to CONTRIBUTING.md in the Development and Testing section of the README.
Checklist