updated citation file

Author: macmacal

CITATION.cff

@@ -10,4 +10,6 @@ authors:
 title: "Robotiq Hand-E ROS 2 Driver"
 version: 0.1.0
 identifiers:
+  - type: doi
+    value: 10.5281/zenodo.15047950
 date-released: 2025-03-18

README.md

@@ -1,6 +1,8 @@
 # robotiq_hande_driver
+
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit)](https://github.com/pre-commit/pre-commit)
+[![DOI](https://zenodo.org/badge/898628878.svg)](https://doi.org/10.5281/zenodo.15047949)
 
 Package for controlling the [Robotiq Hand-E gripper](https://robotiq.com/products/adaptive-grippers#Hand-E) using the [ROS 2 Control](https://control.ros.org/humble/doc/getting_started/getting_started.html) framework. It uses the [robotiq_hande_description](https://github.com/AGH-CEAI/robotiq_hande_description) package for URDF definitions. Originally developed for integration with Universal Robots e-Series (UR5e) and ROS 2 Humble, it is possible to modify this repository to fit your needs. **PRs are welcome!**