Don't create multiple instances if "kitchen create" is called multiple times.
Merge pull request #46 from anl/no-duplicate-creates

Don't create multiple instances if "kitchen create" is called multiple t...
Add missing "a" to interface header
Merge pull request #49 from evertrue/evertrue/eherot/fix_readme_typo

Add missing "a" to interface header
Update README.md

Added section for AWS Session Token parameter.
Merge pull request #60 from berniedurfee/master

Added AWS_SESSION_TOKEN parameter to readme
add option to associate public ip with instance