script/gentree: have find invoke chmod or touch instead of piping to xargs
-rw-r--r-- 271 .gitignore
-rw-r--r-- 2402 Makefile
drwxr-xr-x - docs
drwxr-xr-x - script
drwxr-xr-x - seed
drwxr-xr-x - targets
drwxr-xr-x - worlds