changed the way example readme works

example/README.md

 # Gallery of tile examples
 ## example/tile_T24_5mm_centered.scad
-![example/tile_T24_5mm_centered](example/tile_T24_5mm_centered.png)
+![example/tile_T24_5mm_centered](../example/tile_T24_5mm_centered.png)
 ## example/tile_H_T24_5mm.scad
-![example/tile_H_T24_5mm](example/tile_H_T24_5mm.png)
+![example/tile_H_T24_5mm](../example/tile_H_T24_5mm.png)
 ## example/tile_sandwitch.scad
-![example/tile_sandwitch](example/tile_sandwitch.png)
+![example/tile_sandwitch](../example/tile_sandwitch.png)
 ## example/tile_T24_2mm.scad
-![example/tile_T24_2mm](example/tile_T24_2mm.png)
+![example/tile_T24_2mm](../example/tile_T24_2mm.png)
 ## example/tile_raw_plate_T24_2x3_2mm.scad
-![example/tile_raw_plate_T24_2x3_2mm](example/tile_raw_plate_T24_2x3_2mm.png)
+![example/tile_raw_plate_T24_2x3_2mm](../example/tile_raw_plate_T24_2x3_2mm.png)
 ## example/tile_T36_5mm.scad
-![example/tile_T36_5mm](example/tile_T36_5mm.png)
+![example/tile_T36_5mm](../example/tile_T36_5mm.png)
 ## example/tile_T24_5mm.scad
-![example/tile_T24_5mm](example/tile_T24_5mm.png)
+![example/tile_T24_5mm](../example/tile_T24_5mm.png)

example/gen_readme.py

@@ -7,4 +7,4 @@ print("# Gallery of tile examples")
 
 for arg in args:
     print("## " + arg + ".scad")
-    print("![" + arg + "](" + arg + ".png)")
+    print("![" + arg + "](../" + arg + ".png)")