Choose between several words.
Fix embarrassing error in GetWord()
New method GetXWords() to return set of words. main() displays name with three words.

Change README.md to reflect new set of first steps.
Clarify README and comment goals, change word number to 2, which is better for initial samples.
Oh, yes, I need to remember to add comments, and not have to put them in a separate commit like I did here...