diff --git a/lib/arboreal.js b/lib/arboreal.js
index 0135c0c..6003b64 100644
--- a/lib/arboreal.js
+++ b/lib/arboreal.js
@@ -1,4 +1,4 @@
-!function () {
+var Arboreal = function () {
   'use strict';
 
   function include (array, item) {
@@ -7,12 +7,12 @@
 
   function _traverseDown (context, iterator) {
     var doContinue = true;
-  
+
     (function walkDown (node) {
       var i, newContext;
-  
+
       if (!doContinue) return;
-  
+
       if (iterator(node) === false) {
         //break the traversal loop if the iterator returns a falsy value
         doContinue = false;
@@ -44,33 +44,33 @@
   
   function _traverse (context, iterator, callback) {
     var visited = [],
-        callIterator = function (node) {
-          var id = node.id,
-              returned;
-  
-          if (! include(visited, id)) {
-            returned = iterator.call(node, node);
-            visited.push(id);
-  
-            if (returned === false) {
-              return returned;
-            }
-          }
-        },
-        i, node;
-  
+    callIterator = function (node) {
+      var id = node.id,
+      returned;
+
+      if (! include(visited, id)) {
+        returned = iterator.call(node, node);
+        visited.push(id);
+
+        if (returned === false) {
+          return returned;
+        }
+      }
+    },
+    i, node;
+
     callback(context, callIterator);
   }
   
 
   function _removeChild (node) {
     var parent = node.parent, 
-        child,
-        i;
-  
+    child,
+    i;
+
     for (i = 0; i < parent.children.length; i++) {
       child = parent.children[i];
-  
+
       if (child === node) {
         return parent.children.splice(i, 1).shift();
       }
@@ -98,16 +98,16 @@
   
   Arboreal.parse = function (object, childrenAttr) {
     var root, getNodeData = function (node) {
-          var attr, nodeData = {};
-          for (attr in node) {
-            if (attr !== childrenAttr) nodeData[attr] = node[attr];
-          }
-          return nodeData;
-        };
-  
+      var attr, nodeData = {};
+      for (attr in node) {
+        if (attr !== childrenAttr) nodeData[attr] = node[attr];
+      }
+      return nodeData;
+    };
+
     (function walkDown(node, parent) {
       var newNode, i;
-  
+
       if (!parent) {
         newNode = root = new Arboreal(null, getNodeData(node));
       } else {
@@ -120,9 +120,9 @@
         }
       }
     })(object);
-  
+
     return root;
-  
+
   };
   
   Arboreal.prototype.appendChild = function (data, id) {
@@ -148,11 +148,11 @@
   
   Arboreal.prototype.root = function () {
     var node = this;
-  
+
     if (!node.parent) {
       return this;
     }
-  
+
     while (node.parent) {
       node = node.parent;
     }
@@ -173,10 +173,10 @@
   
   Arboreal.prototype.toString = function () {
     var lines = [];
-  
+
     this.traverseDown(function (node) {
       var separator = '|- ', indentation = '',  i;
-  
+
       if (node.depth === 0) {
         lines.push(node.id);
         return;
@@ -191,21 +191,21 @@
   
   Arboreal.prototype.find = function (finder) {
     var match = null,
-        iterator = (typeof finder === 'function') ?
-          finder : function (node) {
-            if (node.id === finder) {
-              match = node;
-              return false;
-            }
-          };
-  
+    iterator = (typeof finder === 'function') ?
+    finder : function (node) {
+      if (node.id === finder) {
+        match = node;
+        return false;
+      }
+    };
+
     this.traverseDown(function (node) {
       if (iterator.call(this, node)) {
         match = node;
         return false;
       }
     });
-  
+
     return match;
   };
   
@@ -213,18 +213,18 @@
     separator = separator || '/';
     //allow path to begin with 
     if (path[0] === separator) path = path.substring(1);
-  
+
     var indexes = path.split(separator),
-        index = null,
-        context = this,
-        i;
-  
+    index = null,
+    context = this,
+    i;
+
     for (i = 0; i < indexes.length; i++) {
       index = parseInt(indexes[i], 10);
       context = (context.children.length && context.children.length > index) ? 
-        context.children[index] : null;
+      context.children[index] : null;
     }
-  
+
     return context;
   };
   
@@ -244,7 +244,7 @@
   if (typeof module !== 'undefined' && module.exports) {
     module.exports = Arboreal;
   } else {
-    this.Arboreal = Arboreal;
+    return Arboreal;
   }
 
-}(this);
+}();