COOK-2587 Added ability to specify that the most recent snapshot should
be used when passing a volume identifier as the snapshot_id on create
Updating README
[COOK-2605] Only complain about the right_aws gem being missing when actually trying to evaluate & create the ec2 object.
Using new RightAWS API for elastic_ip
Use aws databag attributes instead of hard-coding name and entry.
Merge pull request #15 from jschneiderhan/most-recent-snapshot-attribute

COOK-2587 Most recent snapshot attribute
Merge pull request #16 from juliandunn/COOK-2605-right-aws-warning

[COOK-2605] Fix needless "missing 'right_aws'" warning
Merge pull request #17 from Xorlev/fix_elastic_ip

[COOK-1355] Using new RightAWS API for elastic_ip
Merge pull request #19 from kwarter-cookbooks/aws_dev

[COOK-2670] Use aws databag attributes instead of hard-coding name and entry in create_raid_disks