Rename ~/.docker/hosts to ~/.docker/machines

Signed-off-by: Ben Firshman <ben@firshman.co.uk>
use vpc-id and zone instead of subnet-id for ec2

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
add default zone for amazonec2

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
allow vpc-id, zone and subnet-id options for ec2

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
Merge pull request #84 from bfirsh/rename-hosts-directory-to-machines

Rename ~/.docker/hosts to ~/.docker/machines
Merge pull request #98 from ehazlett/ec2-use-vpc

add vpc-id and zone options for ec2
used ubuntu-14-04-x64 for DO

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
use standard ubuntu 14.04 amd64 ami for ec2

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
refactored docker install for ec2 and DO; both using standard ubuntu 14.04 amd64

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
WIP: refactor azure provider to use ubuntu; need to grant endpoint access

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>