add wkhtmltopdf package
update package index
fix host path for wkhtmltopdf
bust cache while testing install
download wkhtmltopdf package from S3 because github doesn't seem to allow downloading files from raw url that are bigger then 10MB
add description file
add description file and update index
fix typo
remove cache buster
Merge branch 'master' of https://github.com/Sitebase/heroku-packages
Remove empty index file