Completed bibleProcess(). Stripped out <> tags and process both unigrams
and bigrams.
Completed processSentenceUnigrams(). Pad all punctuation with spaces so
that splitting on whitespace captures it.
Completed processSentenceBigrams().
Added two testing functions, unigramDump() and bigramDump(). They print
the data held by the unigrams and bigrams Hashtables, respectively. Tested
on training bible corpus.