Plists for NGINX and MYSQL

Wrote plists for NGINX and MYSQL. These will need to be relocated during module install to:

    ~/Library/LaunchAgents for MySQL

and

    /Library/LaunchAgents for Nginx as it needs to be started as root

Then each service needs a first start to enable autostart with:

    launchctl load -w ~/Library/LaunchAgents/org.mysql.mysqld.plist

and

    sudo launchctl load -w /Library/LaunchDaemons/org.nginx.nginx.plist