add logging module to persist the log

logging.ini

@@ -0,0 +1,21 @@
+[loggers]
+keys=root
+
+[handlers]
+keys=fileHandler
+
+[formatters]
+keys=simpleFormatter
+
+[logger_root]
+level=DEBUG
+handlers=fileHandler
+
+[handler_fileHandler]
+class=FileHandler
+level=DEBUG
+formatter=simpleFormatter
+args=('logs/xi_web_api.log',)
+
+[formatter_simpleFormatter]
+format=%(asctime)s %(name)s - %(levelname)s:%(message)s