load bootstrap over HTTPS
load bootstrap over HTTPS

Mixed Content: The page at 'https://gistpreview.github.io/' was loaded over HTTPS, but requested an insecure script 'http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js'. This request has been blocked; the content must be served over HTTPS.

gistpreview/gistpreview.github.io,gistpreview/gistpreview.github.io