diff --git a/node_modules/material-design-lite/src/ripple/ripple.js b/node_modules/material-design-lite/src/ripple/ripple.js
new file mode 100644
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+++ b/node_modules/material-design-lite/src/ripple/ripple.js
@@ -0,0 +1,260 @@
+/**
+ * @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 Ripple 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 MaterialRipple = function MaterialRipple(element) {
+    this.element_ = element;
+
+    // Initialize instance.
+    this.init();
+  };
+  window['MaterialRipple'] = MaterialRipple;
+
+  /**
+   * Store constants in one place so they can be updated easily.
+   *
+   * @enum {string | number}
+   * @private
+   */
+  MaterialRipple.prototype.Constant_ = {
+    INITIAL_SCALE: 'scale(0.0001, 0.0001)',
+    INITIAL_SIZE: '1px',
+    INITIAL_OPACITY: '0.4',
+    FINAL_OPACITY: '0',
+    FINAL_SCALE: ''
+  };
+
+  /**
+   * 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
+   */
+  MaterialRipple.prototype.CssClasses_ = {
+    RIPPLE_CENTER: 'mdl-ripple--center',
+    RIPPLE_EFFECT_IGNORE_EVENTS: 'mdl-js-ripple-effect--ignore-events',
+    RIPPLE: 'mdl-ripple',
+    IS_ANIMATING: 'is-animating',
+    IS_VISIBLE: 'is-visible'
+  };
+
+  /**
+   * Handle mouse / finger down on element.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   */
+  MaterialRipple.prototype.downHandler_ = function(event) {
+    if (!this.rippleElement_.style.width && !this.rippleElement_.style.height) {
+      var rect = this.element_.getBoundingClientRect();
+      this.boundHeight = rect.height;
+      this.boundWidth = rect.width;
+      this.rippleSize_ = Math.sqrt(rect.width * rect.width +
+          rect.height * rect.height) * 2 + 2;
+      this.rippleElement_.style.width = this.rippleSize_ + 'px';
+      this.rippleElement_.style.height = this.rippleSize_ + 'px';
+    }
+
+    this.rippleElement_.classList.add(this.CssClasses_.IS_VISIBLE);
+
+    if (event.type === 'mousedown' && this.ignoringMouseDown_) {
+      this.ignoringMouseDown_ = false;
+    } else {
+      if (event.type === 'touchstart') {
+        this.ignoringMouseDown_ = true;
+      }
+      var frameCount = this.getFrameCount();
+      if (frameCount > 0) {
+        return;
+      }
+      this.setFrameCount(1);
+      var bound = event.currentTarget.getBoundingClientRect();
+      var x;
+      var y;
+      // Check if we are handling a keyboard click.
+      if (event.clientX === 0 && event.clientY === 0) {
+        x = Math.round(bound.width / 2);
+        y = Math.round(bound.height / 2);
+      } else {
+        var clientX = event.clientX !== undefined ? event.clientX : event.touches[0].clientX;
+        var clientY = event.clientY !== undefined ? event.clientY : event.touches[0].clientY;
+        x = Math.round(clientX - bound.left);
+        y = Math.round(clientY - bound.top);
+      }
+      this.setRippleXY(x, y);
+      this.setRippleStyles(true);
+      window.requestAnimationFrame(this.animFrameHandler.bind(this));
+    }
+  };
+
+  /**
+   * Handle mouse / finger up on element.
+   *
+   * @param {Event} event The event that fired.
+   * @private
+   */
+  MaterialRipple.prototype.upHandler_ = function(event) {
+    // Don't fire for the artificial "mouseup" generated by a double-click.
+    if (event && event.detail !== 2) {
+      // Allow a repaint to occur before removing this class, so the animation
+      // shows for tap events, which seem to trigger a mouseup too soon after
+      // mousedown.
+      window.setTimeout(function() {
+        this.rippleElement_.classList.remove(this.CssClasses_.IS_VISIBLE);
+      }.bind(this), 0);
+    }
+  };
+
+  /**
+   * Initialize element.
+   */
+  MaterialRipple.prototype.init = function() {
+    if (this.element_) {
+      var recentering =
+          this.element_.classList.contains(this.CssClasses_.RIPPLE_CENTER);
+      if (!this.element_.classList.contains(
+          this.CssClasses_.RIPPLE_EFFECT_IGNORE_EVENTS)) {
+        this.rippleElement_ = this.element_.querySelector('.' +
+            this.CssClasses_.RIPPLE);
+        this.frameCount_ = 0;
+        this.rippleSize_ = 0;
+        this.x_ = 0;
+        this.y_ = 0;
+
+        // Touch start produces a compat mouse down event, which would cause a
+        // second ripples. To avoid that, we use this property to ignore the first
+        // mouse down after a touch start.
+        this.ignoringMouseDown_ = false;
+
+        this.boundDownHandler = this.downHandler_.bind(this);
+        this.element_.addEventListener('mousedown',
+          this.boundDownHandler);
+        this.element_.addEventListener('touchstart',
+            this.boundDownHandler);
+
+        this.boundUpHandler = this.upHandler_.bind(this);
+        this.element_.addEventListener('mouseup', this.boundUpHandler);
+        this.element_.addEventListener('mouseleave', this.boundUpHandler);
+        this.element_.addEventListener('touchend', this.boundUpHandler);
+        this.element_.addEventListener('blur', this.boundUpHandler);
+
+        /**
+         * Getter for frameCount_.
+         * @return {number} the frame count.
+         */
+        this.getFrameCount = function() {
+          return this.frameCount_;
+        };
+
+        /**
+         * Setter for frameCount_.
+         * @param {number} fC the frame count.
+         */
+        this.setFrameCount = function(fC) {
+          this.frameCount_ = fC;
+        };
+
+        /**
+         * Getter for rippleElement_.
+         * @return {Element} the ripple element.
+         */
+        this.getRippleElement = function() {
+          return this.rippleElement_;
+        };
+
+        /**
+         * Sets the ripple X and Y coordinates.
+         * @param  {number} newX the new X coordinate
+         * @param  {number} newY the new Y coordinate
+         */
+        this.setRippleXY = function(newX, newY) {
+          this.x_ = newX;
+          this.y_ = newY;
+        };
+
+        /**
+         * Sets the ripple styles.
+         * @param  {boolean} start whether or not this is the start frame.
+         */
+        this.setRippleStyles = function(start) {
+          if (this.rippleElement_ !== null) {
+            var transformString;
+            var scale;
+            var size;
+            var offset = 'translate(' + this.x_ + 'px, ' + this.y_ + 'px)';
+
+            if (start) {
+              scale = this.Constant_.INITIAL_SCALE;
+              size = this.Constant_.INITIAL_SIZE;
+            } else {
+              scale = this.Constant_.FINAL_SCALE;
+              size = this.rippleSize_ + 'px';
+              if (recentering) {
+                offset = 'translate(' + this.boundWidth / 2 + 'px, ' +
+                  this.boundHeight / 2 + 'px)';
+              }
+            }
+
+            transformString = 'translate(-50%, -50%) ' + offset + scale;
+
+            this.rippleElement_.style.webkitTransform = transformString;
+            this.rippleElement_.style.msTransform = transformString;
+            this.rippleElement_.style.transform = transformString;
+
+            if (start) {
+              this.rippleElement_.classList.remove(this.CssClasses_.IS_ANIMATING);
+            } else {
+              this.rippleElement_.classList.add(this.CssClasses_.IS_ANIMATING);
+            }
+          }
+        };
+
+        /**
+         * Handles an animation frame.
+         */
+        this.animFrameHandler = function() {
+          if (this.frameCount_-- > 0) {
+            window.requestAnimationFrame(this.animFrameHandler.bind(this));
+          } else {
+            this.setRippleStyles(false);
+          }
+        };
+      }
+    }
+  };
+
+  // The component registers itself. It can assume componentHandler is available
+  // in the global scope.
+  componentHandler.register({
+    constructor: MaterialRipple,
+    classAsString: 'MaterialRipple',
+    cssClass: 'mdl-js-ripple-effect',
+    widget: false
+  });
+})();