bump to v0.5.11
Handle `null` value for parameter names in `stack` function for router

Conflicts:

	lib/router.js
bump to v0.5.12
Adds `hasKey` and `remove` methods to session
Updates the No Route Found section of the README
Merge branch 'master' of https://github.com/nrstott/bogart into develop
improvements to formatting of html returned by error middleware
Merge pull request #80 from weskinner/develop

improvements to formatting of html returned by error middleware
Support index.html lookup

Move stat to respondWithFile to avoid duplicate stat and allow easy checking for index.html in a directory.
Merge pull request #81 from wmertens/patch-1

Support index.html lookup
Added .cors() exported method to bogart.js
Added cors.js example
Updated README.md to include a section about the CORS response helper
Whitespace commit
Merge pull request #82 from notduncansmith/cors

Added CORS response helper
Fixed lower-casing on default headers
Added spec for bogart.cors()
Merge pull request #83 from notduncansmith/cors

Cors Tests
Merge branch 'master' of https://github.com/nrstott/bogart into develop