Add simple logging

config.py

@@ -1,4 +1,5 @@
 import os
+import logging
 
 
 class Config:
@@ -35,6 +36,11 @@ class DevelopmentConfig(Config):
         os.environ.get('POSTGRES_PASSWORD'),
         os.environ.get('POSTGRES_DB_NAME')
     )
+    log_format = "%(asctime)s - %(levelname)s - %(name)s - "\
+                 "%(filename)s - %(lineno)d - %(message)s"
+    logging.basicConfig(filename='app/logs/main.log', level='WARNING',
+                        format=log_format, datefmt='%Y-%m-%d %H:%M:%S',
+                        filemode='w')
 
 
 class TestingConfig(Config):