CentOS Install Wkhtmltopdf library for odoo.

Steps 1
wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.4/wkhtmltox-0.12.4_linux-generic-amd64.tar.xz

Steps 2
unxz wkhtmltox-0.12.4_linux-generic-amd64.tar.xz

Steps 3
tar -xvf wkhtmltox-0.12.4_linux-generic-amd64.tar

Step 4
mv wkhtmltox/bin/* /usr/local/bin/

Step 5
rm -rf wkhtmltox

Step 6
rm -f wkhtmltox-0.12.4_linux-generic-amd64.tar