fix typo
a node type might have no properties or children, make cnd writer support that
Merge pull request #49 from dantleech/purge-children

Added support for only removing children
Added "expand references" option to dump command

- If specified, the full path to each referrer is listed beneath each
  reference node instead of the normal "print_r" value.
- Really good for debugging...
Revert "Added support for only removing children"

This reverts commit 7c8be1c26a1c7bf6acb5e90b9f5f924395555353.