Strip out tweets that start with @
Strip out tweets that start with @

piket/twitter-mafia,crownsocial/twitter-mafia,piket/twitter-mafia,piket/twitter-mafia,crownsocial/twitter-mafia,piket/twitter-mafia,crownsocial/twitter-mafia,nguyenalexander/twitter-analytics,nguyenalexander/twitter-analytics,crownsocial/twitter-mafia,nguyenalexander/twitter-analytics,nguyenalexander/twitter-analytics