Switch from HTTPS to HTTP in badge examples

Hi there,

This could have been an issue instead of a PR, but I like to propose a solution even if it's not the best one.

Access to libscore.com does not seem to work over HTTPS (yet ?), so I switched the badge examples over to HTTP. IMHO it would be better to serve as much traffic as possible over HTTPS, but in the meantime badge examples should be a no-brainer copy-paste.