You can find copy and pasteable badge code on any analysis page for each repo. Simply click on the badge, and you'll be presented with the code.
Alternatively, you can simply just add /shield to the URL of the main page of your repo on StyleCI to get the badge URL.
By default, we use the "flat-square" style, but you can also choose from "flat", or "plastic" by appending "?style=flat" to "?style=square" to the badge URL.
We also support setting the branch you want by appending "?branch=your-branch" to the URL.
Here is an example badge URL for the Laravel Framework: https://styleci.io/repos/7548986/shield, and here is an example of using the plastic style for the 5.1 branch: https://styleci.io/repos/7548986/shield?style=plastic&branch=5.1.