Enhanced documentation for theme selection and contribution clarity.

[jamhour1g]

This pull request includes two significant improvements to the project’s documentation. The first commit adds detailed comments to guide users on theme selection and exploration, ensuring a user-friendly experience. The second commit refines the contribution section, enhancing clarity and understanding for potential contributors.

[Kylo33]

I disagree. I think that these changes to the README might be making things less clear, especially in the contributing section.

• "Making a Contribution, Participate and improve AtlantaFX." Grammar is incorrect and I don't think that it improves upon "Contributing" as a header.
• I wonder if the list of ways to contribute, such as "2. Increasing or enhancing control samples, which facilitates understanding of current controls and allows us to experiment with how controls appear and function with other themes," which is similar, uses too complicated of wording to make it more clear. I think that it could also be confusing. "Adding or improving control samples" (original) is more clear in my opinion than "Increasing or enhancing control samples".

Overall, I don't think that anything super substantial was added and the clarity may be reduced.