Adds database for replay attack protection
Example implementation of the SignatureStorage Interface
Removes cookie config
Adds php5-sqlite to default manifest
Updates unique key to only include apikey and signature
Updates docblock
Updates layout
Updates description
Adds template for replay prevention example
Major refactoring after creating replay example, validation middleware
Updates dependencies
Updates documentation.

Still needs to be updated to cover replay prevention and validation
middleware.
Updates documentation
Merge pull request #1 from jeremykendall/feature/cnonce

Updates example implementation to use latest version of Query Auth