Integrate with shields.io

[tomnolan]

It would be great if report.ci either offered support to shields.io through an accessible API or if report.ci used the shields.io npm module to generate the badges allowing the standard options such as logo, style, colors, etc.

There is very detailed and clear documentation on how to add support for additional badges to shields.io here: https://github.com/badges/shields/blob/master/doc/TUTORIAL.md