Moved sonnets text to be publicly accessible.

New subfolder, corpora (that's apparently a real, actual word - plural of
corpus - who knew, right?).
Moved textgen into js autorun; pulls corpus.

Pulls and parses a corpus, now, using XhrIo (which was confusing to me for
a little while - I was trying to access the send from the object, instead
of the static method).

Unfortunately it's too slow! So I've got to speed it all up, somehow.