Convert this thing into my first R package

[Farbfetzen]

• [x] make a GitHub project for this.
• [x] tests
• [x] documentation
• [x] better and unique name for the package because "fractal" is already taken, see https://cran.r-project.org/web/packages/available_packages_by_name.html

[Farbfetzen]

Name ideas:

• beautiful.fractals
• beautifulfractals
• BeautifulFractals
• fractalplotr
• fractalplots

https://stackoverflow.com/questions/2041993/how-to-rename-a-git-repository