Fixed documentation

docs/Logging.md

@@ -1,18 +1,23 @@
 # Logging
 
-SDK uses `WDOLogger` class that prints to the console.
+You can set up logging for the library using the `WDOLogger` class.
 
 <!-- begin box info -->
 Networking traffic is logged in its own logger described in the [networking library documentation](https://github.com/wultra/networking-apple).
 <!-- end -->
 
 ### Verbosity Level
 
-You can limit the amount of logged information via `verboseLevel` property.
+You can limit the amount of logged information via the `verboseLevel` property.
 
-| Level | Description |
-| --- | --- |
-| `off` | Silences all messages. |
-| `errors` | Only errors will be printed to the debug console. |
-| `warnings` _(default)_ | Errors and warnings will be printed to the debug console. |
-| `all` | All messages will be printed to the debug console. |
+| Level | Description |
+| ---------------------- | ------------------------------------------------- |
+| `off` | Silences all messages. |
+| `errors` | Only errors will be logged. |
+| `warnings` _(default)_ | Errors and warnings will be logged. |
+| `info` | Error, warning and info messages will be logged. |
+| `debug` | All messages will be logged. |
+
+### Logger Delegate
+
+In case you want to process logs on your own (for example log into a file or some cloud service), you can set `WDOLogger.delegate`.