Add coverage info from CI in readme

5 jobs for master in 10 minutes and 27 seconds (queued for 8 minutes and 54 seconds)
Status Job ID Name Coverage
  Build Testinstall
passed #286716
dailyBuildMasterAll

00:04:29

 
  Doc Coverage
passed #286718
Doc

00:03:31

passed #286717
TestCoverage

00:04:36

94.0%
 
  Deploy
passed #286719
pages

00:01:08

passed pages:deploy

00:00:38