"BUR_USR / BUR_PWD" --> "CAL_USR / CAL_PWD"

trans/db.py

@@ -9,9 +9,9 @@ class DB():
 
         with open('./config.json') as json_config_file:
             config = json.load(json_config_file)
-
-        usr = os.environ.get('BUR_USR')
-        pwd = os.environ.get('BUR_PWD')
+# TODO: url-encode the ontent of 'CAL_USR' / 'CAL_PWD'        
+        usr = os.environ.get('CAL_USR')
+        pwd = os.environ.get('CAL_PWD')
         if usr and pwd:
             url = 'http://{usr}:{pwd}@{host}:{port}/'.format(usr=usr, pwd=pwd, host=config['host'], port=config['port'])
         else: