Update to docs to Docker 1.0.0

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
Use busybox in fixtures, instead of ubuntu

Signed-off-by: d11wtq <chris@w3style.co.uk>
Merge pull request #249 from d11wtq/performance/busybox_fixtures

Use busybox in fixtures, instead of ubuntu
Merge pull request #248 from orchardup/docker-1.0.0

Update to docs to Docker 1.0.0
Merge remote-tracking branch 'upstream/master' into feature/auto_start

Signed-off-by: Chris Corbyn <chris@w3style.co.uk>

Conflicts:
	tests/fixtures/simple-figfile/fig.yml
	tests/unit/project_test.py