Add logo support

[jongracecox]

It would be nice to have the option to include logos in badges.

[jongracecox]

In the same line as this, it would be nice to be able to use the stargazers-style badge:

[jongracecox]

This is similar to #43 in terms of embedding an image via URL(?), although the location would be fixed with this.

It would be nice to have pre-defined locations (e.g. left or right).

A basic first stab at the tasks:

• [ ] Add logo_url argument to badge constructor.
• [ ] Add logo_position argument (that would accept left or right)
• [ ] Static variables to denote left or right (e.g. LOGO_POSITION_LEFT and LOGO_POSITION_RIGHT)
• [ ] Command line arguments for url and position constructor args.
• [ ] Add unit testing
• [ ] Update documentation
• [ ] Update repl.it

[jongracecox]

Images can be embedded into the SVG to make them self-contained using an image tag with xlink and a base64 encoding of the image.

<image width="100" height="100" xlink:href="data:image/png;base64,...">

[ahogen]

embedding an image via URL(?), although the location would be fixed with this

I really appreciate anybadge generating static SVGs. Part of its appeal to me over Shields.io (while awesome!) is that image is just loaded as-is. My project's CI job(s) will update badges with new content. Personal preference would be to avoid fetching the icon every time the image is loaded.

However, I do like pretty icons as well!

I notice that https://simpleicons.org/ provides (free?) SVGs. What if anybadge downloaded the requested icon and embedded it in the output SVG?

[eggplants]

+1

[jongracecox]

This site has a lot of examples: https://github.com/Naereen/badges Some include icons and embedded PNG images.