little issues with the install instructions and Python scripts

[esfandia]

Thanks for a very useful project! I managed to get everything working, but I just wanted to share a few issues I went through while doing so:

• I wasn't able to run the sqlite commands the way they were defined in the install file. Instead I first typed:
  $sqlite3 retrosheet.db (no need to create an empty retrosheet.db file, btw. It gets created if it doesn't exist.)
  now you're entering interactive mode, and you can go:
  .read retrosheet-schema.sql
  I kept that interactive prompt handy for the other .read commands I had to type later on.
• the python scripts in the loaders folder didn't work for me. The issues was that the split function wasn't splitting the years properly. My fix was to remove the '\r\n' options and just go with a straight split(). That did the job.