Destructure the passed in option object

In trying to keep the README unmodified, we accept the passed in
options object and destructure it.
Before, the variants were passed in as part of the object, but they
were ignored, because in the function signature the 'variants' argument
was outside of the (now destructured) object.

Author: mauriciv

animate/animate.js

@@ -13,16 +13,16 @@ const keyframesSlideOut = require('./keyframes/slideOut');
 const keyframesFadeIn = require('./keyframes/fadeIn');
 const keyframesFadeOut = require('./keyframes/fadeOut');
 
-module.exports = function (settings = {}, variants = ['responsive']) {
+module.exports = function ({ settings = {}, variants = ['responsive'] }) {
     return function ({ e, addUtilities }) {
 
         // set fallback if speed not defined
-        const animatedSpeed = settings.settings.animatedSpeed ? settings.settings.animatedSpeed : 1000;
-        const heartBeatSpeed = settings.settings.heartBeatSpeed ? settings.settings.heartBeatSpeed : 1000;
-        const hingeSpeed = settings.settings.hingeSpeed ? settings.settings.hingeSpeed : 2000;
-        const bounceInSpeed = settings.settings.bounceInSpeed ? settings.settings.bounceInSpeed : 750;
-        const bounceOutSpeed = settings.settings.bounceOutSpeed ? settings.settings.bounceOutSpeed : 750;
-        const opacity = settings.settings.opacity ? settings.settings.opacity : 1;
+        const animatedSpeed = settings.animatedSpeed ? settings.animatedSpeed : 1000;
+        const heartBeatSpeed = settings.heartBeatSpeed ? settings.heartBeatSpeed : 1000;
+        const hingeSpeed = settings.hingeSpeed ? settings.hingeSpeed : 2000;
+        const bounceInSpeed = settings.bounceInSpeed ? settings.bounceInSpeed : 750;
+        const bounceOutSpeed = settings.bounceOutSpeed ? settings.bounceOutSpeed : 750;
+        const opacity = settings.opacity ? settings.opacity : 1;
 
         addUtilities({
             '.animated': {