This program takes a word (or list of words) as input and quickly returns
a list (if such a list exists) of the ways that those words can be made from
the names of the elements in the periodic table.
Runs in O(n) time
python stoichiograph.py -i <inputfile> -o <options>
p: print list (file input only)
l: find longest words that can be made
c: find the word with the most possible combinations
python stoichiograph.py -i testInputs/dictionary2.txt -o plc