gem 'wkhtmltopdf-heroku-edge', '~> 0.12.2.1'
Github: pallymore/wkhtmltopdf-heroku-edge
Provides a wkhtmltopdf binary for Heroku.
Preconfigures pdfkit, wicked_pdf and wisepdf to use this binary if they are loaded.
see https://devcenter.heroku.com/articles/cedar-14-migration for more details.
Copyright (c) 2011 Brad Phelan. See LICENSE.txt for further details.