This plugin is inspired A Liquid tag for Jekyll sites that allows embedding image file on Instagram..
cd path/to/plugins
wget https://raw.github.com/longkey1/jekyll-instagram-plugin/master/instagram_tag.rb
or by git-submodule
cd /path/to/jekyll
git submodule add git://github.com/longkey1/jekyll-instagram-plugin.git _plugins/instagram
vi /path/to/jekyll/_config.yml
+ # Instagram plugin
+ instagram_cache: false # or true
+ instagram_cache_dir: '.instagram-cache' # default '.instagram-cache'
{% instagram [class name(s)] http://instagram.com/p/BUG/ [width [height]] [title text] %}
{% instagram left http://instagram.com/p/BUG/ 300 300 "sample text" %}