diff --git a/node_modules/material-design-lite/src/slider/slider.js b/node_modules/material-design-lite/src/slider/slider.js
new file mode 100644
index 0000000..b34b8b6
--- /dev/null
+++ b/node_modules/material-design-lite/src/slider/slider.js
@@ -0,0 +1,244 @@
+/**
+ * @license
+ * Copyright 2015 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+(function() {
+  'use strict';
+
+  /**
+   * Class constructor for Slider MDL component.
+   * Implements MDL component design pattern defined at:
+   * https://github.com/jasonmayes/mdl-component-design-pattern
+   *
+   * @constructor
+   * @param {HTMLElement} element The element that will be upgraded.
+   */
+  var MaterialSlider = function MaterialSlider(element) {
+    this.element_ = element;
+    // Browser feature detection.
+    this.isIE_ = window.navigator.msPointerEnabled;
+    // Initialize instance.
+    this.init();
+  };
+  window['MaterialSlider'] = MaterialSlider;
+
+  /**
+   * Store constants in one place so they can be updated easily.
+   *
+   * @enum {string | number}
+   * @private
+   */
+  MaterialSlider.prototype.Constant_ = {
+    // None for now.
+  };
+
+  /**
+   * Store strings for class names defined by this component that are used in
+   * JavaScript. This allows us to simply change it in one place should we
+   * decide to modify at a later date.
+   *
+   * @enum {string}
+   * @private
+   */
+  MaterialSlider.prototype.CssClasses_ = {
+    IE_CONTAINER: 'mdl-slider__ie-container',
+    SLIDER_CONTAINER: 'mdl-slider__container',
+    BACKGROUND_FLEX: 'mdl-slider__background-flex',
+    BACKGROUND_LOWER: 'mdl-slider__background-lower',
+    BACKGROUND_UPPER: 'mdl-slider__background-upper',
+    IS_LOWEST_VALUE: 'is-lowest-value',
+    IS_UPGRADED: 'is-upgraded'
+  };
+
+  /**
+   * Handle input on element.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   */
+  MaterialSlider.prototype.onInput_ = function(event) {
+    this.updateValueStyles_();
+  };
+
+  /**
+   * Handle change on element.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   */
+  MaterialSlider.prototype.onChange_ = function(event) {
+    this.updateValueStyles_();
+  };
+
+  /**
+   * Handle mouseup on element.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   */
+  MaterialSlider.prototype.onMouseUp_ = function(event) {
+    event.target.blur();
+  };
+
+  /**
+   * Handle mousedown on container element.
+   * This handler is purpose is to not require the use to click
+   * exactly on the 2px slider element, as FireFox seems to be very
+   * strict about this.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   * @suppress {missingProperties}
+   */
+  MaterialSlider.prototype.onContainerMouseDown_ = function(event) {
+    // If this click is not on the parent element (but rather some child)
+    // ignore. It may still bubble up.
+    if (event.target !== this.element_.parentElement) {
+      return;
+    }
+
+    // Discard the original event and create a new event that
+    // is on the slider element.
+    event.preventDefault();
+    var newEvent = new MouseEvent('mousedown', {
+      target: event.target,
+      buttons: event.buttons,
+      clientX: event.clientX,
+      clientY: this.element_.getBoundingClientRect().y
+    });
+    this.element_.dispatchEvent(newEvent);
+  };
+
+  /**
+   * Handle updating of values.
+   *
+   * @private
+   */
+  MaterialSlider.prototype.updateValueStyles_ = function() {
+    // Calculate and apply percentages to div structure behind slider.
+    var fraction = (this.element_.value - this.element_.min) /
+        (this.element_.max - this.element_.min);
+
+    if (fraction === 0) {
+      this.element_.classList.add(this.CssClasses_.IS_LOWEST_VALUE);
+    } else {
+      this.element_.classList.remove(this.CssClasses_.IS_LOWEST_VALUE);
+    }
+
+    if (!this.isIE_) {
+      this.backgroundLower_.style.flex = fraction;
+      this.backgroundLower_.style.webkitFlex = fraction;
+      this.backgroundUpper_.style.flex = 1 - fraction;
+      this.backgroundUpper_.style.webkitFlex = 1 - fraction;
+    }
+  };
+
+  // Public methods.
+
+  /**
+   * Disable slider.
+   *
+   * @public
+   */
+  MaterialSlider.prototype.disable = function() {
+    this.element_.disabled = true;
+  };
+  MaterialSlider.prototype['disable'] = MaterialSlider.prototype.disable;
+
+  /**
+   * Enable slider.
+   *
+   * @public
+   */
+  MaterialSlider.prototype.enable = function() {
+
+    this.element_.disabled = false;
+  };
+  MaterialSlider.prototype['enable'] = MaterialSlider.prototype.enable;
+
+  /**
+   * Update slider value.
+   *
+   * @param {number} value The value to which to set the control (optional).
+   * @public
+   */
+  MaterialSlider.prototype.change = function(value) {
+
+    if (typeof value !== 'undefined') {
+      this.element_.value = value;
+    }
+    this.updateValueStyles_();
+  };
+  MaterialSlider.prototype['change'] = MaterialSlider.prototype.change;
+
+  /**
+   * Initialize element.
+   */
+  MaterialSlider.prototype.init = function() {
+
+    if (this.element_) {
+      if (this.isIE_) {
+        // Since we need to specify a very large height in IE due to
+        // implementation limitations, we add a parent here that trims it down to
+        // a reasonable size.
+        var containerIE = document.createElement('div');
+        containerIE.classList.add(this.CssClasses_.IE_CONTAINER);
+        this.element_.parentElement.insertBefore(containerIE, this.element_);
+        this.element_.parentElement.removeChild(this.element_);
+        containerIE.appendChild(this.element_);
+      } else {
+        // For non-IE browsers, we need a div structure that sits behind the
+        // slider and allows us to style the left and right sides of it with
+        // different colors.
+        var container = document.createElement('div');
+        container.classList.add(this.CssClasses_.SLIDER_CONTAINER);
+        this.element_.parentElement.insertBefore(container, this.element_);
+        this.element_.parentElement.removeChild(this.element_);
+        container.appendChild(this.element_);
+        var backgroundFlex = document.createElement('div');
+        backgroundFlex.classList.add(this.CssClasses_.BACKGROUND_FLEX);
+        container.appendChild(backgroundFlex);
+        this.backgroundLower_ = document.createElement('div');
+        this.backgroundLower_.classList.add(this.CssClasses_.BACKGROUND_LOWER);
+        backgroundFlex.appendChild(this.backgroundLower_);
+        this.backgroundUpper_ = document.createElement('div');
+        this.backgroundUpper_.classList.add(this.CssClasses_.BACKGROUND_UPPER);
+        backgroundFlex.appendChild(this.backgroundUpper_);
+      }
+
+      this.boundInputHandler = this.onInput_.bind(this);
+      this.boundChangeHandler = this.onChange_.bind(this);
+      this.boundMouseUpHandler = this.onMouseUp_.bind(this);
+      this.boundContainerMouseDownHandler = this.onContainerMouseDown_.bind(this);
+      this.element_.addEventListener('input', this.boundInputHandler);
+      this.element_.addEventListener('change', this.boundChangeHandler);
+      this.element_.addEventListener('mouseup', this.boundMouseUpHandler);
+      this.element_.parentElement.addEventListener('mousedown', this.boundContainerMouseDownHandler);
+
+      this.updateValueStyles_();
+      this.element_.classList.add(this.CssClasses_.IS_UPGRADED);
+    }
+  };
+
+  // The component registers itself. It can assume componentHandler is available
+  // in the global scope.
+  componentHandler.register({
+    constructor: MaterialSlider,
+    classAsString: 'MaterialSlider',
+    cssClass: 'mdl-js-slider',
+    widget: true
+  });
+})();