updated the readme

README.md

@@ -7,6 +7,22 @@ What we are now working on basic Computer Science concepts like different Data S
 If you want to contribute to the repository don't be afraid to open a PR
 if its good, We will most definitely merge it. Thanks for your time.
 
+## Development
+
+This has been made with [mdbook](https://github.com/rust-lang/mdBook),
+so to get started do the following step -
+
+1. All markdown files need to be added to `src` folder then Append/Edit the `src/SUMMARY.md` to add pages and change the structure of the book website.
+
+2. Start the mdbook server to see the changes with `mdbook serve --open`
+
+3. Then to publish the book just do `mdbook build`
+
+4. Push the changes and the Github action will automatically publish the website
+
+Now at least all the CPP notes are hosted on this website - https://rishabh672003.github.io/Programming-Notes/
+So you can add more notes and make pull request to this branch
+
 ## Credits
 
 For CPP notes: Credit to [developer-roadmap](https://github.com/kamranahmedse/developer-roadmap) and [roadmap.sh](roadmap.sh), I followed there roadmap and