Merge pull request #72 from codecrafters-io/add-pixel

Add Facebook Pixel tracking script

docs/facebook-pixel.js

@@ -0,0 +1,23 @@
+!(function (f, b, e, v, n, t, s) {
+  if (f.fbq) return;
+  n = f.fbq = function () {
+    n.callMethod ? n.callMethod.apply(n, arguments) : n.queue.push(arguments);
+  };
+  if (!f._fbq) f._fbq = n;
+  n.push = n;
+  n.loaded = !0;
+  n.version = "2.0";
+  n.queue = [];
+  t = b.createElement(e);
+  t.async = !0;
+  t.src = v;
+  s = b.getElementsByTagName(e)[0];
+  s.parentNode.insertBefore(t, s);
+})(
+  window,
+  document,
+  "script",
+  "https://connect.facebook.net/en_US/fbevents.js"
+);
+fbq("init", "1218366289258395");
+fbq("track", "PageView");