Update git-hf-release

fixed git hf release pull/push
Merge tag '1.4.1' into develop

Released v1.4.1
Merge pull request #20 from neonal/patch-1

Update git-hf-release
hubflow_track_repo added
hubflow_track_repo
Force deletion of local branch, ignoring unmerged changes when cancelling a feature
Adding -F flag to 'git hf feature push' to add the --force flag to the git push command
Fix: resolve incompatibility with Git v1.7.10.2 (Apple Git-33)
Version bump for bugfix release
Merge branch 'release/1.4.2'
Merge tag '1.4.2' into develop

Bugfix release
Remove unused Makefile

The install.sh script appears to be the documented install script, the Makefile
depends on git-flow which is invalid here and this only serves to confuse new
users attempting to install.
Pass args on to gitflow-installer.sh

Allow install, uninstall args to be passed through
Don't require root if install dir is writable

For many users (particularly OS X users if they've setup HomeBrew the
recommended way) the default install prefix of /usr/local/bin will already be
writable and for users specifying an alternate prefix like $HOME/bin it will be
as well.  So don't require sudo usage in such cases.
Improve README markdown
Merge pull request #29 from j0k3r/patch-1

Improve README markdown
Merge pull request #28 from mborsuk/install-fixes

A few minor install script fixes
Merge pull request #23 from datasift/feature/delete_unmerged_feature_branch

Force deletion of local branch, ignoring unmerged changes when cancellin...
Merge pull request #25 from bsedat/feature/force-push

Adding -F flag to 'git hf feature push' to add the --force flag to the g...
New: Changelog link added to README file