diff --git a/README.md b/README.md
index eddd2c4..d074731 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,14 @@
 
 [Documentation can be found here](<http://www.goodboydigital.com/pixijs/docs/>)
 
+### How to build ###
+
+```
+cd build
+ant -f PixiBuild.xml
+```
+
+This will create a minified version at bin/pixi.js and a non-minified version at bin/pixi.dev.js
 
 ### Current features ###
 

diff --git a/README.md b/README.md
index eddd2c4..d074731 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,14 @@
 
 [Documentation can be found here](<http://www.goodboydigital.com/pixijs/docs/>)
 
+### How to build ###
+
+```
+cd build
+ant -f PixiBuild.xml
+```
+
+This will create a minified version at bin/pixi.js and a non-minified version at bin/pixi.dev.js
 
 ### Current features ###
 
diff --git a/build/PixiBuild.xml b/build/PixiBuild.xml
index 65f0c74..e2e8ea6 100644
--- a/build/PixiBuild.xml
+++ b/build/PixiBuild.xml
@@ -10,43 +10,26 @@
  
   <target name="run">
    
+    <concat destfile="../bin/pixi.dev.js">
+
+      <filelist dir="../src/pixi" files="Pixi.js, Point.js, Rectangle.js, DisplayObject.js, DisplayObjectContainer.js"/>
+      <filelist dir="../src/pixi" files="Sprite.js, MovieClip.js, InteractionManager.js, Stage.js"/>
+      <filelist dir="../src/pixi/utils" files="Utils.js, EventTarget.js, gl-matrix-min.js, Detector.js"/>
+      <filelist dir="../src/pixi/renderers" files="WebGLShaders.js, WebGLRenderer.js, WebGLBatch.js, CanvasRenderer.js"/>
+      <filelist dir="../src/pixi/extras" files="Strip.js, Rope.js"/>
+      <filelist dir="../src/pixi/textures" files="BaseTexture.js, Texture.js"/>
+      <filelist dir="../src/pixi/loaders" files="SpriteSheetLoader.js, AssetLoader.js"/>
+
+    </concat>
+
   	<jscomp compilationLevel="simple" debug="false" output="../bin/pixi.js">
    	    
-      <sources dir="../src/pixi/">
-        <file name="Pixi.js"/>
-          
-        <file name="Point.js"/>
-      	<file name="Rectangle.js"/>
-      	
-        <file name="utils/Utils.js"/>
-      	<file name="utils/EventTarget.js"/>
-		<file name="utils/gl-matrix-min.js"/>
-
-		<file name="renderers/WebGLShaders.js"/>
-		<file name="renderers/WebGLRenderer.js"/>
-		<file name="renderers/WebGLBatch.js"/>
-		
-		<file name="renderers/CanvasRenderer.js"/>
-		
-      	<file name="DisplayObject.js"/>
-		<file name="DisplayObjectContainer.js"/>
-		<file name="Stage.js"/>
-		<file name="Sprite.js"/>
-		<file name="extras/Strip.js"/>
-		<file name="extras/Rope.js"/>
-		<file name="MovieClip.js"/>
-	 	<file name="InteractionManager.js"/>
-		<file name="textures/BaseTexture.js"/>
-		<file name="textures/Texture.js"/>
-		
-		<file name="utils/Detector.js"/>
-		<file name="loaders/SpriteSheetLoader.js"/>
-		<file name="loaders/AssetLoader.js"/>
-	
+      <sources dir="../bin/">
+        <file name="pixi.dev.js"/>
       </sources>
  
 	</jscomp>
- 
+
   </target>
  
 </project>
\ No newline at end of file