ezpz-tooltip plugin

[Chinedumeze]

I found this plugin to be exactly what I have been craving. But being too green in JQuery and Javascript, I have not been able to implement it successfully!
I saved the plugin file in my root folder as jquery.ezpz.tooltip.js
I inserted the target class and IDs in the Target Divs and Content class and IDs in the Contents Divs to match those in the corresponding Target Divs.
And then entered the calling script at bottom of my page just before the closing body tag like this:

$(document).ready(function(){
$(".tooltip-target").ezpz_tooltip();
});
Please help me pinpoint my mistake.

My webpage is Bootstrap 3-based and with .php extension.