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.
Added parallel scan feature.
Get auth needs to accept and return token as well as accesskey and secretkey
Updating the tests to pass with #25
Merge pull request #26 from alimoeeny/patch-6

Updating the tests to pass with #25
Merge pull request #25 from alimoeeny/patch-5

Get auth needs to accept and return token as well as accesskey, secret key
part 1
Part 2
Part 3
Part 4
Merge pull request #27 from alimoeeny/patch-7

part 1
Merge pull request #28 from alimoeeny/patch-8

Part 2
Merge pull request #29 from alimoeeny/patch-9

Part 3
Merge pull request #30 from alimoeeny/patch-10

Part 4
fix PR bugs for sign test