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
Add instructions about build script to README

Signed-off-by: Nathan LeClaire <nathan.leclaire@gmail.com>
Merge pull request #126 from nathanleclaire/readme

Add instructions about build script to README