Linux binary from go1.6.2

Currently some issues with changes in docker/go-plugins-helpers due to some updates in docker/docker/volume. You can get around this by checking out the correct tagged versions of docker and some other things, but if you don't need/want to build on your own, just grab this binary and put in your go binary directory. This binary includes the changes to fix the docker volume ls command.

This driver is only supported on Linux with Open iSCSI, so didn't bother cross compiling for other platforms. Please use github issues to report any problems.