Setup tracking config correctly

.. to avoid 'git push' resulting in new remote branch called 'origin'
after 'git hf feature start my-fancy-branch-name-goes-here'
Merge pull request #48 from ymc-geha/feature/correct-remote-tracking-config

Setup tracking config correctly
Fix install instructions in README
Version bump
Merge branch 'release/1.5.2'
Merged 1.5.2
Merge pull request #6 from sp-roger-clotet/feature/1.5.2

Upgrade to 1.5.2 from datasift