Initialize connection to DynamoDB
options parameter must include values for :aws_access_key_id and :aws_secret_access_key in order to create a connection
ddb = DynamoDB.new( :aws_access_key_id => your_aws_access_key_id, :aws_secret_access_key => your_aws_secret_access_key )
Get DynamoDB items
Create DynamoDB table
Delete DynamoDB item
or
Delete DynamoDB table
Describe DynamoDB table
Get DynamoDB item
List DynamoDB tables
Update DynamoDB item
or
Query DynamoDB items
Scan DynamoDB items
Update DynamoDB item
or
Update DynamoDB table throughput