If you are looking for a t-shirt you can send Pull Request to this repository
Say Hello to the world in whatever language you like
Hacktoberfest is a month-long celebration of open source software run by DigitalOcean and DEV.Hacktoberfest is open to everyone in our global community.To participate, four pull requests must be submitted to public GitHub repositories.You can sign up anytime between October 1 and October 31.
Step 1: Register for Hacktoberfest
Step 2:
Fork this repository to your own profile.
Step 3:
Create Hello World file in any programming language or markup language.
Step 4:
Make a pull request thats it. (You have to create at least four pull request)