Merge pull request #65 from eyakubovich/master

Switching to Vish's netlink library
log output: fix backend initialization failed error output

Currently the output prints the %v formatting. This should use
log.Errorf instead of log.Error

Fixes #67
Fix spelling
Merge pull request #69 from inthecloud247/patch-1

Fix spelling
Merge pull request #68 from visualphoenix/bugfix/error_log

log output: fix backend initialization failed error output
Add VXLAN backend

VXLAN datapath is supported by the kernel thereby reducing the
overhead of TUN device and userspace switching. This patch takes
advantange of DOVE extensions and does not use multicast for port
flooding.

Fixes #18