Create good documentation based on the content of the repo

[Abhishek627]

Update README.md with links to decent programs from the repo and explain the general idea behind the repo.

[srinibasbiswal]

Hi @Abhishek627 , please add hacktoberfest topic in your repo to be considered for Hacktoberfest 2020.
Read more at : https://hacktoberfest.digitalocean.com/hacktoberfest-update