diff --git a/.gitignore b/.gitignore
index d0ab703..183b647 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,5 @@
 node_modules
 .gh-pages
+.idea
+.DS_STORE
+npm-debug.log
diff --git a/dist/appear.js b/dist/appear.js
index 9c8931b..4bca352 100644
--- a/dist/appear.js
+++ b/dist/appear.js
@@ -1,5 +1,5 @@
 /* appear.js 1.1.0 */
-appear = (function(){
+(function(window){
   'use strict';
   var scrollLastPos = null, scrollTimer = 0, scroll = {};
 
@@ -173,7 +173,7 @@ appear = (function(){
         }
       }
 
-      return function(obj) {
+      var appear = function(obj) {
         obj = obj || {};
 
         // assign the fn to execute when a node is visible
@@ -244,6 +244,12 @@ appear = (function(){
         };
 
       };
+
+      if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
+        module.exports = appear;
+      } else {
+        window.appear = appear;
+      }
     }()(obj));
   };
-}());
+}(this));
diff --git a/dist/appear.min.js b/dist/appear.min.js
index 3cb74b3..a6055d4 100644
--- a/dist/appear.min.js
+++ b/dist/appear.min.js
@@ -1,2 +1,2 @@
 /* appear.min.js 1.1.0 */
-appear=function(){"use strict";function e(){var e=window.scrollY||window.pageYOffset;null!=n&&(o.velocity=e-n,o.delta=o.velocity>=0?o.velocity:-1*o.velocity),n=e,i&&clearTimeout(i),i=setTimeout(function(){n=null},30)}function t(e,t){var n=e.getBoundingClientRect();return n.top+n.height>=0&&n.left+n.width>=0&&n.bottom-n.height<=(window.innerHeight||document.documentElement.clientHeight)+t&&n.right-n.width<=(window.innerWidth||document.documentElement.clientWidth)+t}var n=null,i=0,o={};return addEventListener("scroll",e,!1),function(e){return function(e){function n(e,t){return function(){var n=this,i=arguments;clearTimeout(l),l=setTimeout(function(){e.apply(n,i)},t)}}function i(){o.delta<y.delta.speed&&(s||(s=!0,d(),setTimeout(function(){s=!1},y.delta.timeout))),n(function(){d()},y.debounce)()}function r(){d(),addEventListener("scroll",i,!1),addEventListener("resize",i,!1)}function a(){v=[],l&&clearTimeout(l),u()}function u(){removeEventListener("scroll",i,!1),removeEventListener("resize",i,!1)}function d(){f||(v.forEach(function(e,n){e&&t(e,y.bounds)?h[n]&&(h[n]=!1,g++,y.appear&&y.appear(e),y.disappear||y.reappear||(v[n]=null)):(h[n]===!1&&(y.disappear&&y.disappear(e),w++,y.reappear||(v[n]=null)),h[n]=!0)}),y.reappear||y.appear&&(!y.appear||g!==p)||y.disappear&&(!y.disappear||w!==p)||(f=!0,u(),y.done&&y.done()))}function c(){if(!m){m=!0,y.init&&y.init();var e;if(e="function"==typeof y.elements?y.elements():y.elements){p=e.length;for(var t=0;t<p;t+=1)v.push(e[t]),h.push(!0);r()}}}var p,l,s,f,m=!1,v=[],h=[],g=0,w=0,y={};return function(e){e=e||{},y={init:e.init,elements:e.elements,appear:e.appear,disappear:e.disappear,done:e.done,reappear:e.reappear,bounds:e.bounds||0,debounce:e.debounce||50,delta:{speed:e.deltaSpeed||50,timeout:e.deltaTimeout||500}},addEventListener("DOMContentLoaded",c,!1);var t=!1;Function("/*@cc_on return document.documentMode===10@*/")()&&(t=!0);var n="complete"===document.readyState||"loaded"===document.readyState;return t?n&&c():(n||"interactive"===document.readyState)&&c(),{trigger:function(){d()},pause:function(){u()},resume:function(){r()},destroy:function(){a()}}}}()(e)}}();
\ No newline at end of file
+!function(e){"use strict";function t(){var t=e.scrollY||e.pageYOffset;null!=i&&(r.velocity=t-i,r.delta=r.velocity>=0?r.velocity:-1*r.velocity),i=t,o&&clearTimeout(o),o=setTimeout(function(){i=null},30)}function n(t,n){var i=t.getBoundingClientRect();return i.top+i.height>=0&&i.left+i.width>=0&&i.bottom-i.height<=(e.innerHeight||document.documentElement.clientHeight)+n&&i.right-i.width<=(e.innerWidth||document.documentElement.clientWidth)+n}var i=null,o=0,r={};return addEventListener("scroll",t,!1),function(t){return function(t){function i(e,t){return function(){var n=this,i=arguments;clearTimeout(s),s=setTimeout(function(){e.apply(n,i)},t)}}function o(){r.delta<b.delta.speed&&(f||(f=!0,c(),setTimeout(function(){f=!1},b.delta.timeout))),i(function(){c()},b.debounce)()}function a(){c(),addEventListener("scroll",o,!1),addEventListener("resize",o,!1)}function u(){h=[],s&&clearTimeout(s),d()}function d(){removeEventListener("scroll",o,!1),removeEventListener("resize",o,!1)}function c(){m||(h.forEach(function(e,t){e&&n(e,b.bounds)?y[t]&&(y[t]=!1,g++,b.appear&&b.appear(e),b.disappear||b.reappear||(h[t]=null)):(y[t]===!1&&(b.disappear&&b.disappear(e),E++,b.reappear||(h[t]=null)),y[t]=!0)}),b.reappear||b.appear&&(!b.appear||g!==l)||b.disappear&&(!b.disappear||E!==l)||(m=!0,d(),b.done&&b.done()))}function p(){if(!v){v=!0,b.init&&b.init();var e;if(e="function"==typeof b.elements?b.elements():b.elements){l=e.length;for(var t=0;t<l;t+=1)h.push(e[t]),y.push(!0);a()}}}var l,s,f,m,v=!1,h=[],y=[],g=0,E=0,b={},L=function(e){e=e||{},b={init:e.init,elements:e.elements,appear:e.appear,disappear:e.disappear,done:e.done,reappear:e.reappear,bounds:e.bounds||0,debounce:e.debounce||50,delta:{speed:e.deltaSpeed||50,timeout:e.deltaTimeout||500}},addEventListener("DOMContentLoaded",p,!1);var t=!1;Function("/*@cc_on return document.documentMode===10@*/")()&&(t=!0);var n="complete"===document.readyState||"loaded"===document.readyState;return t?n&&p():(n||"interactive"===document.readyState)&&p(),{trigger:function(){c()},pause:function(){d()},resume:function(){a()},destroy:function(){u()}}};"undefined"!=typeof module&&"undefined"!=typeof module.exports?module.exports=L:e.appear=L}()(t)}}(this);
\ No newline at end of file
diff --git a/lib/appear.js b/lib/appear.js
index 1b968a6..e96d197 100644
--- a/lib/appear.js
+++ b/lib/appear.js
@@ -1,4 +1,4 @@
-appear = (function(){
+(function(window){
   'use strict';
   var scrollLastPos = null, scrollTimer = 0, scroll = {};
 
@@ -172,7 +172,7 @@ appear = (function(){
         }
       }
 
-      return function(obj) {
+      var appear = function(obj) {
         obj = obj || {};
 
         // assign the fn to execute when a node is visible
@@ -243,6 +243,12 @@ appear = (function(){
         };
 
       };
+
+      if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
+        module.exports = appear;
+      } else {
+        window.appear = appear;
+      }
     }()(obj));
   };
-}());
+}(this));