Updated README.md for 2D_Breakout

[eludwin]

PR Description 📜

Updated the README.md document for 2D_Breakout game file. Added installation description, corrected grammar and punctuation, formatted game mechanics and functionalities sections.

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[kunjgit]

Thank you @eludwin ,for creating the PR and contributing to our GameZone 💗
Review team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀

[kunjgit]

Hey @eludwin,
Please make sure to link the relevant issue using the appropriate syntax, such as "#issueNumber" 👀.
Follow the proper guideline and make a new PR again 😀.
Happy Hacking 💗

[kunjgit]

Thank you @eludwin , for your valuable time and contribution in our GameZone 💗.
It’s our GameZone, so Let’s build this GameZone altogether !!🤝
Hoping to see you soon with another PR again 😇
Wishing you all the best for your journey into Open Source🚀