0.4-alpha

Changelog

cd2014f fix termutil package for BSD platforms
30921d9 Update documentation with latest changes
2dd8dc8 add ssh subcommand
e259f03 add termutil package
696c82b remove unused SSHPublicKeyFile constant
6754bae refactor cmd package into package cli
2f31ea8 Modify RestartPolicy for Docker-based GoVM instances
3d8c080 Fix govm remove --all
ac20f45 Add start sub-command
45f542c Update README with qemu flags feature