Enhancement of README.md with grammar corrections

[sailikhithk]

The punctuations, articles that are missing are placed appropriately and cross-checked with apps like Grammarly. Everything is perfect with this updated READ ME.md

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• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
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Hi @sailikhithk!

Thank you for your pull request and welcome to our community. We require contributors to sign our Contributor License Agreement, and we don't seem to have you on file.

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[sailikhithk]

My CLI agreement was successful with my Github. Please see this as a reference.

[facebook-github-bot]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

[facebook-github-bot]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

[sailikhithk]

Please merge this pull request into the README file as 13 grammar mistakes were corrected, this would be helpful for the fellow contributors to go through in future,

[elinguiuriel]

@sailikhithk welcome and thanks to you for your contribution! feel free to pick another in the issues tab!

[sailikhithk]

Sure @elinguiuriel , I shall be working on it. Thanks for merging my pull request. Happy to contribute more.