Updated README to add current pose input

Author: Matt Hansen

README.md

@@ -3,7 +3,7 @@
 ROS2 Navigation
 
 # Overview
-The ROS2 Navigation system is the central control system for a robot to autonomously move to a given location on a map. Given a map and a destination, the system uses sensor input to localize the robot on the map, generates a plan to reach the destination, and outputs commands to drive a robot to that location. It will also autonomously avoid obstacles and re-plan if needed to bypass them.
+The ROS2 Navigation system is the central control system for a robot to autonomously move to a given location on a map. Given a current pose, a map and a destination, the system uses sensor input to localize the robot on the map, generates a plan to reach the destination, and outputs commands to drive a robot to that location. It will also autonomously avoid obstacles and re-plan if needed to bypass them.
 
 # Contributing
 Currently we are in the design phase, and are accepting input and requirements. To contribute, see the [design README.md](design/README.md)