Droot Versions Save

• Fix permission denied error if droot export the docker image whose default user is not root #23

• Use Env of docker image insetad of printenv to generate drootenv #22

fixed /proc not mounted and recursive symlink #21 by @ichirin2501

Fix that it failed to mount /proc when droot run twice #20

Fix problem that /proc is not mounted #19

• run: Fix 'no such device' error https://github.com/yuuki/droot/pull/18

• Replace github.com/fsouza/go-dockerclient into github.com/docker/docker/client

• remove 'deploy' command
• remove 'rm' command
• Fix the failure of umount about /sys on systemd environment
• Replace yuuki/go-group into os/user
• Replace libcontainer's Setuid/Setgid into syscall package's ones

• go 1.8.1

• Use dep
• Go version 1.7.5
• Fix installations bug that is located in /Users/y_uuki/go/bin/cmd by 'go install'