Fixing accessor list to match updated JSON

JSON payload from /v2/lists endpoint has changed, but the accessor list
has not been updated to reflect this. Current calls to get_lists()
result in an "undefined method `created_date`" error.

(A similar change was just made to the CC Java SDK.)
Fixing ruby template examples

Incorrect iterator in example; need to loop over the results hash array.
Merge pull request #7 from mapalumbo/master

Update ContactList accessors.
Added support for configure SDK in Rack middle-ware.
Added RSpec tests to test middle-ware configuration.
Removing ruby config files.
Resolving merge conflicts
resolving syntax error in Ruby 1.8.7
Merge pull request #9 from dsjellz/master

Added support for configure SDK in Rack middle-ware.
Fixed issue with undefined Campaign and TrackingSummary properties.
Updated docs.
Merge pull request #10 from lennynyktyk/development

Added handling of undefined API resource properties and updated docs.
Updated gem to version 1.0.1
Added missing travis.yml file.
Merge pull request #11 from lennynyktyk/development

Added missing travis.yml file.
Finalize merge from development.
Updated gem version and added ignore for .gem files.
Merge branch 'master' into development
Removed .gem file.
merged with upstream