updated readme

Hey Jim,
  Your readme says create the db with the name breweverywhere where it should say brew_everywhere very simple fix that i am sure stopped some people in their tracks. My first thought was to change the code but after seeing sprinkled everywhere I just re-created the db.
Merge pull request #1 from GeoffreyEmery/patch-1

!-critical error-! updated read me to be proper name of database