Create an SSH key and add it to GitHub account

[webknjaz]

Note: it's best to complete this task from within the dev environment created in #2

See:

• https://help.github.com/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent/#generating-a-new-ssh-key (you may omit adding a password)
• https://help.github.com/articles/connecting-to-github-with-ssh/

After completing instructions, post the result of the following command in a comment to this issue:

ssh -T git@github.com

Check yourself

If performed correctly, you'll see your GitHub username in the console output.