Display a badge (based the "badges") without requiring file-system access or knowledge of HTML.
Display "Badges" in the side-panel which points to a web-site and an image which is then used to build the "badge".
To access the configuration you have to go to Appearance > Widgets and edit the settings in the Panel.
Using the Widget you can choose whether to:
If more control is needed, or more badges need to be displayed, the badges plugin on the WordPress site might be a better fit.