Update readme

Begin logging
Account for fb2 books without covers

lector/parsers/comicbooks.py

@@ -19,10 +19,13 @@
 
 import os
 import time
+import logging
 import zipfile
 
 from lector.rarfile import rarfile
 
+logger = logging.getLogger(__name__)
+
 
 class ParseCOMIC:
     def __init__(self, filename, *args):