Fixed dynamodb table.DescribeTable()
Merge pull request #18 from cvanderschuere/master

Fixed dynamodb table.DescribeTable()
Properly check for errors in PutItem and AddItem
Merge pull request #19 from rubyphunk/master

Properly check for errors in PutItem and AddItem
Enable PUT Action 

Allow in-place replacement of attribute values via PUT.
Merge pull request #20 from philipsoutham/master

Enable PUT Action
readme formatting
Creating new common AWS V4Signer. Adding AWS Signature Version 4 test suite. Update dynamodb to use new V4Signer. Removing old dynamodb signer.
Merge pull request #21 from shopsmart/v4signer

Creating new common AWS V4Signer.
Merge from upstream