How to release a build artifact asset on GitHub with a script?

Question

I am trying to figure out a one-command process for generating a build on GitHub.

What I anticipate doing is running some sort of command- make release, say, and the

Answer 1

Preparation:

1) Download github-releases and put its executable in your PATH.
2) Create a token at https://github.com/settings/applications#personal-access-tokens let's say abc123

Uploading an artifact:

1) Let's say you have just compiled what you decide to call version 3.1, and want to upload it.
2) Make sure you have committed everything.
3) Run these five commands:

git tag v3.1
git push
git push --tags

github-release release --security-token abc123 --user <you> --repo <yourrepo> \
    --tag v3.1

github-release upload --security-token abc123 --user <you> --repo <yourrepo> \
    --tag v3.1 --name <thefile> --file <thefile>

You can upload several files, for instance for different operating systems.

(Based on VonC's answer, which unfortunately does not detail how to upload an artifact)