suggest an interesting command to run for trixl.

js/pixl/README.md

@@ -16,6 +16,9 @@ it's live at <http://pixl.papill0n.org>.
see it live at <http://pixl.papill0n.org/3>.
    // quick start (type the following in the console):
    trixl.generate.fun()
## todo
* code sharing (especially for worlds created and dynamics, but also for