tools: Update replay examples

tools/README.md

@@ -191,7 +191,8 @@ Replay driving data
 
 `unlogger.py` replays data collected with [chffrplus](https://github.com/commaai/chffrplus) or [openpilot](https://github.com/commaai/openpilot).
 
-Usage (Remote data):
+Unlogger with remote data:
+
 ```
 # Log in via browser
 python lib/auth.py
@@ -199,13 +200,13 @@ python lib/auth.py
 # Start unlogger
 python replay/unlogger.py <route-name>
 #Example:
-#python replay/unlogger.py '99c94dc769b5d96e|2018-11-14--13-31-42'
+#python replay/unlogger.py '3533c53bb29502d1|2019-12-10--01-13-27'
 
 # In another terminal you can run a debug visualizer:
 python replay/ui.py   # Define the environmental variable HORIZONTAL is the ui layout is too tall
 ```
 
-Usage (Local data downloaded from device or https://my.comma.ai):
+Unlogger with local data downloaded from device or https://my.comma.ai:
 
 ```
 python replay/unlogger.py <route-name> <path-to-data-directory>
@@ -221,6 +222,16 @@ python replay/unlogger.py <route-name> <path-to-data-directory>
 ```
 ![Imgur](https://i.imgur.com/Yppe0h2.png)
 
+LogReader with remote data
+
+```python
+from tools.lib.logreader import LogReader
+from tools.lib.route import Route
+route = Route('3533c53bb29502d1|2019-12-10--01-13-27')
+log_paths = route.log_paths()
+events_seg0 = list(LogReader(log_paths[0]))
+print(len(events_seg0), 'events logged in first segment')
+```
 
 Debug car controls
 -------------