Update readme

README.md

@@ -7,15 +7,20 @@ Requires Dart runtime.
 - Defaults to `phone` for device when `tracker_id` is not provided
 - Removes `device_tracker.` prefix from `tracker_id` field if exists
 - By default waits for 2 seconds before each request to avoid hitting OpenCage free tire API rate limits (Used by Recorder for reverse geocoding)
+- Tries to fix wrong battery levels
+- Can continue importing the same file starting from the provided record number
 
 ## Anti-features
 - Errors handling is bad
 - Can't authenticate
+- Probably will fail with self-signed certificate
 - Tested only on GeoJSON exported by Dawarich
 
 ## Usage
 ```
 dart bin/owntracks_import.dart -s <GeoJSON file path> -d <Recorder IP address with protocol and port> -u <user name> -v
-
+```
+or
+```
 dart bin/owntracks_import.dart --help
 ```