Install Flash

NOTE: To install Adobe Flash in Centos7:

yum -y install \
http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

yum -y install \
http://linuxdownload.adobe.com/linux/x86_64/adobe-release-x86_64-1.0-1.noarch.rpm

yum install flash-plugin