The MISSING shields.io badge, Jenkins-coverage.
This tiny web server will generate your Jenkins-code-coverage badge!
# install
$ npm install -g jenkins-coverage-badge
# run with port number (default: 9913)
$ jcb 80
Listening on port 80...
Now you can get a coverage badge from Jacoco or Cobertura coverage reports with,
http://host:port/jenkins/jacoco/:jenkins_url/job/:job
http://host:port/jenkins/cobertura/:jenkins_url/job/:job
For https, simply add the protocol to the URL as follows:
http://host:port/jenkins/jacoco/https/:jenkins_url/job/:job
MIT