Merge pull request #82 from bcicen/master

adding subnet mask to readme examples
Re-add default gateway after moving IP to macvlan subinterface

Save some head scratching for others that go down this path.
Merge pull request #87 from dineshs-altiscale/macvlan

Re-add default gateway after moving IP to macvlan subinterface
fix invalid sh syntax
Merge pull request #92 from tsaikd/kd-fix-syntax

fix invalid sh syntax
Update README to not suggest an lxc dependency

When reading the readme, the impression was that Pipework required LXC.  This edit tries to remove that impression, and give a little detail of what pipework is built on.
Merge pull request #93 from hugoduncan/patch-1

Update README to not suggest an lxc dependency