title: AWS API Get Any Resource By ARN
body: <p>I have a bunch AWS resource ARNs. I can easily write a switch/case statement on the namespace of the ARN and call the appropriate <code>describeXYZ</code> method on the correct AWS API class to get the resource details. But is there a way of taking any arbitrary ARN and getting a description for it? Something like <code>aws.describeResource({arn:myArn}, callback)</code>?</p>