Automatic closing of examples, revise drawing example

examples/raymarcher.kl

@@ -182,11 +182,9 @@ WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nS
     Screen = bitmap.data; X = bitmap.size.x; Y = bitmap.size.y
     Raymarcher_Update()
 
-
     SelectObject(bitmap.hdc, bitmap.dib)
     BitBlt(window_dc, 0, 0, (bitmap.size.x)->int, (bitmap.size.y)->int, bitmap.hdc, 0, 0, SRCCOPY)
 
-
     frame_time := Time() - frame_start_time
     frame_number += 1
     TotalTime += frame_time
@@ -203,3 +201,6 @@ WinMain :: (hInstance: HINSTANCE, hPrevInstance: HINSTANCE, lpCmdLine: LPSTR, nS
           new_frame_time = Time() - frame_start_time
 
         frame_time = new_frame_time
+
+    if CStringCompare(lpCmdLine, "testing")
+      ExitProcess(0)