Add DynamoDB ZF2 session save handler
Add test for DynamoDB ZF2 session save handler
Add dependency on ZF2 session component
Add a configurable factory for the DynamoDB session save handler
Add DynamoDB session save handler documentation
Merge pull request #11 from gwis/add-dynamodb-savehandler

Add DynamoDB implementation of the ZF2 session save handler interface
Fixed headers on README
Updated CHANGELOG for v1.1.0