added 1.18 changes to destroy-environment
Merge pull request #38 from evilnick/unstable

import master commits
fix issue #7
Update command from juju 1.18.0 help.
Merge pull request #43 from sinzui/18-commands

Update command from juju 1.18.0 help.
Update all the docs with well-formed heads and current copyrights.
Merge pull request #45 from sinzui/well-formed-pages

Update all the docs with well-formed heads and current copyrights.
Added doc about configuring juju to use proxies.
Added a doc about backup and restore of the state-server.
Update lxc configuration and operation instructions. Fix ill-formed markup.
Merge pull request #49 from sinzui/lxc-updates

Update lxc configuration and operation instructions.
Merge pull request #48 from sinzui/backup-restore

Added a doc about backup and restore of the state-server.
remove extraneous '$'s from sinuzi's commit
Merge pull request #46 from sinzui/proxies

Added doc about configuring juju to use proxies.
fix <pre> formatting
fix for new destroy-environment command
remove unwanted commands
Added howto doc about managing access with authorised keys.
Merge pull request #47 from sinzui/authorised-keys

Added howto doc about managing access with authorised keys.
fix conflicts