Note on F2C version

Author: adivardi

README.md

@@ -34,6 +34,15 @@ PS: Click on either image to see the demo videos! :-)
 
 https://github.com/user-attachments/assets/e44d8f10-c5b0-4345-81ad-25f3bcd06030
 
+### Fields2Cover Installation
+
+opennav_coverage works with Field2Cover v1.2.1. The newest version v2.0.0 is not supported at the moment.
+
+To install Fields2Cover, clone it into a colcon workspace and build with `colcon build`.
+
+- Humble & Iron: Use tag `v1.2.1`
+- Jazzy & rolling: Use branch `v1.2.1-devel`
+
 ## Interfaces
 
 The two main interfaces are `NavigateCompleteCoverage` and `ComputeCoveragePath`. The first is the action definition to request the BT Navigator's `CoverageNavigator` plugin to navigate usign a Complete Coverage task input. The latter is an analog to the `PlannerServer`'s action definition for computing Complete Coverage paths using the `opennav_coverage` action server. See `opennav_coverage_msgs` for complete details.