Added exclusion capabilities

example.html

		<li><a href="#NoMetatdata">No metadata</a></li>
		<li><a href="#AssignedId" id="staticId">Assigned identification</a></li>
		<li><a href="#DefaultMetadata" data-analytics-dog="terrier">Default metadata given</a></li>
		<li><a href="#Excluded" class="analytics-exclude">Excluded link</a></li>
	</ul>
	<p>These links have been dynamically created at runtime but still are being traced.</p>

jquery-analytics.js

// The MIT License (MIT)
//
// Copyright (c) <year> <copyright holders>
// Copyright (c) 2013 Bryan Allred <bryan.allred@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
    var settings = {
        attributes: [],
        assignTo: ["a", "input[type='submit']"],
        url: null,
        client: null
        client: null,
        exclude: ".analytics-exclude",
        url: null
    };
    // Walk the tree of a given node.
        // Locally scope this variable.
        $this = $(this);
        if (settings.url && !$this.is(".analytics-captured")) {
        if (settings.url && !$this.is(".analytics-captured") && !$this.is(settings.exclude)) {
            // // We prevent the default action to allow the background call to succeed.
            // e.preventDefault();