Microplanning v0.01

Currently for "declarative" sentences; see the included formatted README.md for more detailed information.

This will require more additions to SuReal to see real working results (and for proper chunking), but the code logic should work.

As development is still on-going, some debug `display` messages are left in for now.

* Also worth considering whether using scheme is the best or not.
Why do you want to require it to be a verb?  What if you want to produce a sentence like "I am happy."  Currently, the predicate of that sentence is classified as a predicate-adjective (I assume the pos in the code is 'adjective' but I haven't checked) -- kind-of like in Chinese :) and besides, later you may want to use this rule to construct sentential complements, such as "The students disagreed with the government submitting to Beijing" where "the government's submitting to Beijing" would best be processed as a complete sentence in which the main verb, "submit," is in the form of a noun (gerund) "submitting".  Anyway, the point is there may be cases where the main-predicate of a sentence is not classified as a verb, so why not leave it open to any PredicateNode?