Tasks

Choose a cool name!
Create a description for your project.
Add a README.md file containing all the basic information about your project.
Create a CONTRIBUTING.md file containing all the necessary information so that other developers can help you.
Add a .gitignore file containing everything you do not want versioning .
Select and add the best license for your project.
Choose a methodology versioning and follow.
Create a roadmap to make clear the course of the project.
Document your project in the best possible way.
Describe your Releases clearly and objectively or create a CHANGELOG.md file and do it there.
Use badges to indicate the status of your project.
Configure and add a .editorconfig.
When necessary do not hesitate to create a website for your project. Enjoy and publish with github pages.
Write automated tests
Integrate your tests a Continuous Integration service.
Provide your project in the appropriate package manager. (EX: bower, npm, etc...)