Show sub-[sub-[sub-[...]]]folders?

I have the following directory structure for a timed webcam.

```
images
-2015
--201509
---20150901
----...
----20150901-084000.jpg
----20150901-084500.jpg
----...
---20150902
---...
--201510
---20151001
----...
---20151002
----...
```

and was hoping your script could show the images when placed in the `images` directory.
