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CHG: update readme and changelog

Co-authored-by: Maciej Aleksandrowicz <mac.aleksandrowicz@gmail.com>

Author: slimasziom

README.md

@@ -24,9 +24,6 @@ ros2 run robotiq_hande_driver hande_driver
 ```
 
 ### Test Serial Connection
-```bash
-ros2 launch robotiq_hande_driver gripper_controller_preview.launch.py use_fake_hardware:=false
-```
 
 Another terminal
 ```bash

robotiq_hande_driver/CHANGELOG.md

@@ -9,8 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- ModbusRTU communication
-- Protocol abstraction
+* [PR-2](https://github.com/AGH-CEAI/robotiq_hande_driver/pull/2) - ModbusRTU communication
+* [PR-2](https://github.com/AGH-CEAI/robotiq_hande_driver/pull/2) - Protocol abstraction
 
 ### Changed