Fixing the bug with twitter image and better description of Arito

I have written the description of Arito in read.me in a better language to give the users a more better user experience. Being a frontend developer at IIT Roorkee, I tried to create a better UI by making the description more readable and interesting.

Also the image that opens to the twitter link is absent i.e. there is no image, so I fixed it with a twitter image.

I therefore request you to please accept and merge my pull request.

Type of change

What sort of change have you made:

[x] Bug fix (non-breaking change which fixes an issue)
[x] Code style update (formatting, local variables)

How Has This Been Tested?

< Describe_how_have_you_verified_the_changes_made >

Checklist:

[x] My code follows the guidelines of this project.
[x] I have performed a self-review of my own code.
[x] I have commented my code, particularly wherever it was hard to understand.
[x] I have made corresponding changes to the documentation.

Screenshots (Images)

Before the changes	After the Changes

Name	Link
Latest commit	1925ddae81afe37b7aa1e3f6ccf3276b31b72cce
Latest deploy log	https://app.netlify.com/sites/arito/deploys/64a5a39891df05000805381d
Deploy Preview	https://deploy-preview-241--arito.netlify.app
Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

prakhartiwari0 / arito