add option to associate public ip with instance
update readme
automatically set associate_public_ip when using vpc
add associate_public_ip option documentation
Make the specs pass again: set required config
Merge branch 'americanhonors-feature/public_ip_address'
wait_for euca to get an IP address
Combine the wait_fors
Add support for Eucalyptus
Add EBS parameters as part of default driver config

This commit also adds DeleteOnTermination flags, to avoid leaving orphaned EBS
volumes after an instance is destroyed.
Add EBS configuration options
Added spot request feature for test-kitchen
Added spot request feature for test-kitchen
Add ability to request spot instance pricing
Warn about $$$