Adding CORS middleware.
Add support for preflight requests.
Add max age to preflight responses.
Docs and formatting.
Add WithCORS vs WithoutCORS benchmarks.
Adding README.
+ make Binding return 422 instead of 400 on well formed requests with validation errors. Distinguish between multipart and url encoded forms in order to be able to revoke badly formed multipart requests
Add utf-8 charset to example
Merge pull request #119 from regadas/master

Add utf-8 charset to example
- unused constant, leftover of experimental URL form validation implementation
Renaming Opts to Options for consistency.
Renaming Opts to Options for consistency.
Merge branch 'cors' of github.com:rakyll/martini-contrib into rakyll-cors
Merge branch 'status_codes' of github.com:beatrichartz/martini-contrib into beatrichartz-status_codes
Merge branch 'master' of github.com:codegangsta/martini-contrib into cors
Adding cors middleware to the main README.
Merge pull request #120 from rakyll/cors

[cors] Add cors middleware to the main README, fix cors usage