Hacktoberfest guideline for contributors

Hello contributors in the world of opensource, this is not any sort issue but just a guideline.

- Before making any PR please create an Issue
- If you find any upgradation or bug in the website, you can create your own issue or work on the previous issues.
- When creating PR make sure you tag the required issue using # issuenumber Happy Coding!!
- Make PR in dev branch only