This is the v1.5 branch, not master
Fix branch name
Merge pull request #690 from bjori/readme-branch

Branch name fixes

* bjori/readme-branch:
  Fix branch name
  This is the v1.5 branch, not master
Merge remote-tracking branch 'upstream/v1.5'

* upstream/v1.5:
  Fix branch name
  This is the v1.5 branch, not master
Fix branch name