Update readme.md

Author: bhrigukansra

readme.md

@@ -7,6 +7,8 @@ A repository by [Bhrigu Kansra](https://github.com/kinetickansra) for beginners
 
 Steps to contribute.
 
+0. Register on your GitHub ID on [hackoberfest website](https://hacktoberfest.digitalocean.com/sign_up/register).
+
 1.Fork this repository.
 
 2.Add an algorithms in desired algorithm in specified folder(create new folders as per your requirement).