Fix some documentation errors

README.md

@@ -15,9 +15,12 @@ Add the following switch at the end of the URL of the web application to activat
 
 ```/index.php?dev=1```
 
+The application now reads the config file "calendar_dev.json" and unlocks all doors because the values unlockDate in this file are in the past.
+
+
 ### Configuration parameter
 
-Set width and height for the calendar:
+Set configuration parameters for the calendar:
 
 ```json
 ...
@@ -25,13 +28,13 @@ Set width and height for the calendar:
     "calendarWidth": "472",
     "calendarHeight": "827",
     "useModal": "true",
-    "showExtras": "true"
+    "showExtras": "true",
     "enableSnow": "true"
   },
 ...
 ```
 
-Add entries for the days
+Modify entries for the individual days
 ```json
 ...
 "entries": [