some small refactorings

src/scripts/demos/simple_000.lua

@@ -1,3 +1,7 @@
+--
+-- small demonstrator for Lua binding on pixwerx
+--
+
 -- loading our libraries
 pw.script:load_all()
 
@@ -16,7 +20,6 @@ w.position = pw.point.new(100,100)
 
 print("client size after resize: ",w.client_size.width,w.client_size.height)
 
-
 local pl = pw.pipeline.new()
 if pl:create(w.client_size) then
     print("pipeline ok")
@@ -27,7 +30,7 @@ end
 -- setup a lua callback function as callback
 w.on_update = function(self)
     pl:draw()
-    -- print("test on update",w.position.x,w.position.y,pw.timer.now)
+	-- print("test on update",w.position.x,w.position.y,pw.time.now)
 
 end
 
@@ -37,7 +40,7 @@ for i = 1,#ds do
     print("display ",i,ds[i].name)
 end
 
-local t = pw.timer.new()
+local t = pw.time.new()
 
 w.visible = true