EXIF tag plugin

I've wrote EXIF tag plugin for Jekyll.

If you write text like this:

{% img /images/2012/03/first_shot_orion.jpg %}

{% exif /images/2012/03/first_shot_orion.jpg %}

You will see the converted result like this:

焦点距離 10 mm F5.6 NIKON D5000 ISO 1600 15 秒露光 2010-11-05 01:32:07 +0900