How to add simple code to TW

[Auston Bevins]

Hi there, 

I have spent some hours trying to find a solution to my problem. As I do not understand a lot of what TW is doing or where the main html is at, I thought I might just ask my question here. 

I would like to add the following simple code to my TW. From my understanding, it will be able to scan any text on the page, and if it matches certain text, will link it appropriately. Here is the website I am grabbing it from RefTagger. If someone could tell me how to add this simple code to my whole TW, I would be incredibly thankful.

Best!

<script>

var refTagger = {

settings: {

bibleVersion: "ESV",

socialSharing: []

}

};

(function(d, t) {

var g = d.createElement(t), s = d.getElementsByTagName(t)[0];

g.src = "//api.reftagger.com/v2/RefTagger.js";

s.parentNode.insertBefore(g, s);

}(document, "script"));

</script>