Add .gitattributes to fix crlf problems on windows
Including Validate example

There's a similar example in the test file already
Updated example using Validate() to check the request
Fixed inconsistent indentation
Merge branch 'master' of github.com:superlogical/martini-contrib into superlogical-master
fix code example

Code example references a direct call to `Error` which fails, proper example should us the `binding.Error` instead.
return `Content-Type: application/json` in `ErrorHandler

The `ErrorHandler` defaults to returning `text/plain` despite the fact that it actually returns JSON. I've set the `Content-Type` header to `application/json; charset=utf-8`.
Merge pull request #52 from danawoodman/patch-2

fix code example
Merge pull request #53 from danawoodman/patch-3

return `Content-Type: application/json` in `ErrorHandler
JMS #55: Added support for removing a session key

closes #55
Merge branch 'JMS-55'