moved usernames to environment

Author: David Zuckerman

lib/berkeley_library/sftp_handler/downloader/gobi.rb

@@ -43,7 +43,7 @@ def default_host
         end
 
         def default_username
-          'berkeley'
+          ENV['LIT_GOBI_USERNAME]'
         end
 
         def ssh_options

lib/berkeley_library/sftp_handler/downloader/lbnl.rb

@@ -35,11 +35,11 @@ def default_host
         end
 
         def default_username
-          'ucblib'
+          ENV['LIT_LBNL_USERNAME'] 
         end
 
         def default_filename
-          @default_filename ||= "lbnl_people_#{most_recent_monday.strftime('%Y%m%d')}.zip"
+          @default_filename ||= "#{ENV['LBNL_FILENAME']}_#{most_recent_monday.strftime('%Y%m%d')}.zip"
         end
 
         def most_recent_monday