Added README.

Author: Jim

README

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+CodeIgniter Youtube API Library
+===============================
+
+This library will let a user authenticate with youtube and perform actions such as uploading a video, commenting and rating videos, and getting video feeds.
+
+Some basic documentation can be found at http://code.google.com/apis/youtube/articles/codeigniter_library.html
+For the most up to date documentation checkout my blog at http://jimdoescode.blogspot.com
+
+Usage
+------
+Copy the files under your application directory. Then load the library like this:
+
+$params['apikey'] = 'YOUTUBE API KEY';
+$this->load->library('youtube', $params);
+
+$this->youtube->getMostViewedVideoFeed(array('max-results'=>30));
+
+License
+-------
+This library is licensed under the MIT license. 
+
+Sparks
+------
+You can also use this library with Sparks. Simply install using sparks then call.
+
+$this->load->spark('youtube/1.0.0');
+
+Then load the library as specified in the usage.
+