Helper methods for to easy integrate social buttons 'Pin It', 'Like', 'Tweet it', 'G+'
Add this line to your application's Gemfile:
gem 'social_buttons'
And then execute:
$ bundle
In application.js add:
//= require social_buttons
In view:
<%= pin_it_button url: @product.url, media: @product.large_image_url, description: @product.description %>
<%= fb_like_button %>
<%= twitter_share_button count: 'none' %>
<%= google_plus_button size: 'medium', annotation: 'none' %>
More details you can find in the code