Consider adding a license

[rank-and-files]

I really appreciate your effort and found your tutorials very helpful. In order for others to be able to use your code, and for this project to have maximum impact, it would be great if the repository had a license. You might not be aware of this, but without a license, no one can use your code legally.

Quote from here:

You're under no obligation to choose a license. However, without a license, the default copyright laws apply, meaning that you retain all rights to your source code and no one may reproduce, distribute, or create derivative works from your work. If you're creating an open source project, we strongly encourage you to include an open source license. The Open Source Guide provides additional guidance on choosing the correct license for your project.