website: Remove XZ Utils dependency from installation guide

Vagrant boxes are not compressed with xz any more.

Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
util/packer: Remove unused compress-box.sh script

Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>
Merge pull request #455 from flynn/remove-xz

Remove xz
controller/client: Add missing methods

Signed-off-by: Jesse Stuart <jesse@jessestuart.ca>
controller/examples: Generate examples

Signed-off-by: Jesse Stuart <jesse@jessestuart.ca>