Wrote a basic spell checker based upon Peter Norvig's wonderful example at
http://norvig.com/spell.py.

Might be used in order to provide basic spell checking prior to the necessarily
strenuous logography

Also added Aspell training to filter out candidate words and return the most
likely one.
Merge branch 'master' of https://github.com/Markov-Grammatical-inferencer/shiny-computing-machine