Fix season and score errors.

Some games were missing the season and scores for the very first play.
These have been corrected. In each case though, it seems like the game
is missing!

Also removed a "blank" ,,,,,,,,,,,, line.
Update Design Doc to cover 2012 data format.

The 2012 data is using a different CSV format than the 2002 to 2011
data. I have begun adding information about it, but I haven't yet
figured out all of them.