Update amulet docs to reflect new UnitSentry access

Signed-off-by: Tim Van Steenburgh <tvansteenburgh@gmail.com>
Add docs for d.unrelate()

Signed-off-by: Tim Van Steenburgh <tvansteenburgh@gmail.com>
Removes slight blibbet about git as we no longer use git to manage charm revisions
Merge pull request #191 from chuckbutler/hook_errors

Removes blurb about git as we no longer use git to manage charm revisions
Added 1.20.9 release notes.
Merge pull request #192 from sinzui/1.20.9-release-notes

Added 1.20.9 release notes.
Merge branch 'master' into vagrant-workflow
Clean up; explicit vagrant directory

Make the ~/vagrant directory explicit and consistent across docs
Major refactoring

standardize OSX -> OS X (woe for a stylesheet)
Remove information duplicated between this and the vagrant provider
page; reference it explicitly
Standardize on ~/vagrant local folder
Update examples to use the bash template to fit the example code, and
match the output with the tree output
Improved HA documentation

More detailed description of how to recover when state servers fail
and many other fixes and cleanups throughout.
Merge pull request #194 from AdamIsrael/vagrant-workflow

Vagrant workflow
Merge pull request #193 from mjs/juju-ha-rework

Improved HA documentation
link vagrant config from getting-started

Make it trivial to find the vagrant config for new users.
Merge pull request #195 from jrwren/master

link vagrant config from getting-started
Fix broken URL.
add metadata for authors-charm-components
Merge pull request #196 from tvansteenburgh/amulet-1.6.0

Amulet 1.6.0 - Doc updates for new features
fix command for generating tools metadata

command was missing "metadata".
Merge pull request #197 from benkeens/master

fix command for generating tools metadata
unconfuse azure config