Add in-progress PLN / Relex2Logic example
Separate interactive agent PLN wrapper
Add additional data for tuffy smokes example test, and refactor code
Add in-progress relex2logic / pln demo
Move interactive agent wrapper to general examples folder
Minor refactoring on smokes example
Merge pull request #600 from cosmoharrigan/pln

In-progress PLN and Relex2Logic test examples
Update README
Merge pull request #604 from cosmoharrigan/pln

Update README