Library for handling exif image tags.

Basic usage:

  > gem install RubyInline
	> gem install ruby-exiv2
	> irb -r rubygems
	
	require 'exiv2'
	@img = Exiv2::Image.new("a.jpg")
	puts @img["Exif.Photo.PixelXDimension"]
	@img["Exif.Photo.PixelXDimension"] = 2048
	@img.save

Version 1.3 introduces dynamic accessors:

    require 'exiv2'
    @img = Exiv2::Image.new("a.jpg")
    puts @img.Exif.Photo.PixelXDimension
	@img.Exif.Photo.PixelXDimension = 2048
	@img.save