Updated README with Changelog.

Fixed spelling mistake.

Changed readme for v2.3.

Merge branch 'master' of github.com:philsturgeon/codeigniter-restserver

Added sponsorship details for CodingFutures, but their website is not…

… done yet.

New version of CodeIgniter REST Server with API Key management, permi…

…ssions and method limiting. All turned off by default, turn them on and find the schema for each feature in application/config/rest.php.