Fix: non-root users cannot always use ifconfig
Upgrade default Node.js version to 0.10.4
Upgrade default Redis version to 2.6.12
Formatting
Documentation tweaks
Fix handling of optional path argument in ``git.working_copy()``
Use fabtools.files.md5sum() in git test fabfile
Use ``run`` instead of ``sudo`` when possible in git test fabfile
Fix test failure in git test fabfile [#93]