diff --git a/_assets/javascripts/global/echo.js b/_assets/javascripts/global/echo.js
deleted file mode 100644
index 80dda38..0000000
--- a/_assets/javascripts/global/echo.js
+++ /dev/null
@@ -1,137 +0,0 @@
-/*! echo-js v1.7.3 | (c) 2016 @toddmotto | https://github.com/toddmotto/echo */
-/*global define */
-/*global module */
-(function (root, factory) {
-  if (typeof define === "function" && define.amd) {
-    define(function() {
-      return factory(root);
-    });
-  } else if (typeof exports === "object") {
-    module.exports = factory;
-  } else {
-    root.echo = factory(root);
-  }
-})(this, function (root) {
-
-  "use strict";
-
-  let echo = {};
-
-  let callback = function () {};
-
-  let offset, poll, delay, useDebounce, unload;
-
-  let isHidden = function (element) {
-    return (element.offsetParent === null);
-  };
-
-  let inView = function (element, view) {
-    if (isHidden(element)) {
-      return false;
-    }
-
-    let box = element.getBoundingClientRect();
-    return (box.right >= view.l && box.bottom >= view.t && box.left <= view.r && box.top <= view.b);
-  };
-
-  let debounceOrThrottle = function () {
-    if(!useDebounce && !!poll) {
-      return;
-    }
-    clearTimeout(poll);
-    poll = setTimeout(function(){
-      echo.render();
-      poll = null;
-    }, delay);
-  };
-
-  echo.init = function (opts) {
-    opts = opts || {};
-    let offsetAll = opts.offset || 0;
-    let offsetVertical = opts.offsetVertical || offsetAll;
-    let offsetHorizontal = opts.offsetHorizontal || offsetAll;
-    let optionToInt = function (opt, fallback) {
-      return parseInt(opt || fallback, 10);
-    };
-    offset = {
-      t: optionToInt(opts.offsetTop, offsetVertical),
-      b: optionToInt(opts.offsetBottom, offsetVertical),
-      l: optionToInt(opts.offsetLeft, offsetHorizontal),
-      r: optionToInt(opts.offsetRight, offsetHorizontal)
-    };
-    delay = optionToInt(opts.throttle, 250);
-    useDebounce = opts.debounce !== false;
-    unload = !!opts.unload;
-    callback = opts.callback || callback;
-    echo.render();
-    if (document.addEventListener) {
-      root.addEventListener("scroll", debounceOrThrottle, false);
-      root.addEventListener("load", debounceOrThrottle, false);
-    } else {
-      root.attachEvent("onscroll", debounceOrThrottle);
-      root.attachEvent("onload", debounceOrThrottle);
-    }
-  };
-
-  echo.render = function (context) {
-    let nodes = (context || document).querySelectorAll("[data-echo], [data-echo-background]");
-    let length = nodes.length;
-    let src, elem;
-    let view = {
-      l: 0 - offset.l,
-      t: 0 - offset.t,
-      b: (root.innerHeight || document.documentElement.clientHeight) + offset.b,
-      r: (root.innerWidth || document.documentElement.clientWidth) + offset.r
-    };
-    for (let i = 0; i < length; i++) {
-      elem = nodes[i];
-      if (inView(elem, view)) {
-
-        if (unload) {
-          elem.setAttribute("data-echo-placeholder", elem.src);
-        }
-
-        if (elem.getAttribute("data-echo-background") !== null) {
-          elem.style.backgroundImage = "url(" + elem.getAttribute("data-echo-background") + ")";
-        }
-        else if (elem.src !== (src = elem.getAttribute("data-echo"))) {
-          elem.src = src;
-        }
-
-        if (!unload) {
-          elem.removeAttribute("data-echo");
-          elem.removeAttribute("data-echo-background");
-        }
-
-        callback(elem, "load");
-      }
-      else if (unload && !!(src = elem.getAttribute("data-echo-placeholder"))) {
-
-        if (elem.getAttribute("data-echo-background") !== null) {
-          elem.style.backgroundImage = "url(" + src + ")";
-        }
-        else {
-          elem.src = src;
-        }
-
-        elem.removeAttribute("data-echo-placeholder");
-        callback(elem, "unload");
-      }
-    }
-    if (!length) {
-      echo.detach();
-    }
-  };
-
-  echo.detach = function () {
-    if (document.removeEventListener) {
-      root.removeEventListener("scroll", debounceOrThrottle);
-    } else {
-      root.detachEvent("onscroll", debounceOrThrottle);
-    }
-    clearTimeout(poll);
-  };
-
-  return echo;
-
-});