v0.4.2: Implemented no-lighting shader

Gives a very big performance boost on older devices

SPD-classes/src/main/java/com/watabou/noosa/Image.java

@@ -164,7 +164,7 @@ public class Image extends Visual {
 			dirty = false;
 		}
 
-		NoosaScript script = NoosaScript.get();
+		NoosaScript script = script();
 		
 		texture.bind();
 		
@@ -179,6 +179,10 @@ public class Image extends Visual {
 		
 	}
 
+	protected NoosaScript script(){
+		return NoosaScript.get();
+	}
+
 	@Override
 	public void destroy() {
 		super.destroy();