sudo wget https://downloads.wkhtmltopdf.org/0.12/0.12.1/wkhtmltox-0.12.1_linux-trusty-amd64.deb
sudo dpkg -i wkhtmltox-0.12.1_linux-trusty-amd64.deb
sudo cp /usr/local/bin/wkhtmltoimage /usr/bin/wkhtmltoimage
sudo cp /usr/local/bin/wkhtmltopdf /usr/bin/wkhtmltopdf