Update README.md

Author: HuaYuXiao

README.md

@@ -1,6 +1,6 @@
 # apf_local_planner
 
-The apf_local_planner package, modified from [local_planner](https://github.com/amov-lab/Prometheus/tree/v1.1/Modules/planning/local_planner)
+Artificial Potential Field algorithm, implemented on drone, compatible with ROS-noetic, MAVROS, PX4-Autopilot.
 
 ![HitCount](https://img.shields.io/endpoint?url=https%3A%2F%2Fhits.dwyl.com%2FHuaYuXiao%2FAPF-Planner.json%3Fcolor%3Dpink)
 ![Static Badge](https://img.shields.io/badge/ROS-noetic-22314E?logo=ros)
@@ -19,3 +19,7 @@ roslaunch apf_local_planner simulation.launch
 ```
 
 ![rqt_graph](log/2024-05-08/rosgraph.png)
+
+## Acknowlegement
+
+This package is modified from [local_planner](https://github.com/amov-lab/Prometheus/tree/v1.1/Modules/planning/local_planner).