Usage:
    require 'rubygems'
    require 'rchardet'

    cd = CharDet.detect(some_data)
    encoding = cd['encoding']
    confidence = cd['confidence'] # 0.0 <= confidence <= 1.0

Project page: 
    http://rubyforge.org/projects/rchardet

    Made for rFeedParser <http://rfeedparser.rubyforge.org>.