Since this plugin uses the same command (/ranks) as the plugin (PlayerRanks). Could you possibly change the command in the official downloadable file so that it doesn't conflict with the other plugins command ? 
I know I could just change it myself but, If this updates again, would have to change it again. :D 

Please and Thank You

Why would you use two player ranking plugins  ?

You can simply change the name in the file so that the two plugins do not conflict with one another as you noted, but I have no interest in changing the command that I've had the same for a few years now.