Added a simple external node script for debugging

This just duplicates the functionality of the old external_node script.
This is mainly a bandaid to keep the current course afloat while we
refactor.
added a comment explaining this
also, quote--just for carefuls
fix the quoting
Merge pull request #225 from binford2k/fix/3.2/external_node_script

Added a simple external node script for debugging