Readability-Octopress-Plugin is a project mainly written in JAVASCRIPT and RUBY, it's free.
Adds configurable buttons to posts in Octopress. See more at https://github.com/imathis/octopress/wiki/3rd-party-plug-ins
Place 'sharing.html' in [OCTOPRESS_REPO].themes/classic/source/post/
If you don't have hidden files shown on OSX, open up Terminal and type the following 2 lines:
defaults write com.apple.finder AppleShowAllFiles TRUE killall Finder
To hide hidden files again, type:
defaults write com.apple.finder AppleShowAllFiles FALSE killall Finder
You've basically got 2 options:
readability_basic_buttons: true # Read Now, Read Later
readability_all_buttons: false # Read Now, Read Later, Print, Email, Send to Kindle
For support, open up an issue on the Github repo. Thanks! Also, if you'd like to fork this, be my guest.
For even more info on the Readability API, check out their developer docs