install script updates 2

README.md

@@ -34,15 +34,15 @@ cd ~/RDC_Simulation
 
 **Terminal 2 - Start ArduCopter SITL:**
 ```bash
-source ~/venv-ardupilot/bin/activate
+source ~/.ardupilot_env
 sim_vehicle.py -v ArduCopter -f gazebo-iris --model JSON --console
 # Wait for "JSON received:" messages (shows Gazebo is connected)
 ```
 
 **Terminal 3 - Run Controller:**
 ```bash
-source ~/venv-ardupilot/bin/activate
 cd ~/RDC_Simulation
+source activate.sh
 python scripts/run_ardupilot.py --pattern square
 ```
 
@@ -96,7 +96,7 @@ Gazebo isn't sending data to SITL.
 ### "empy not found" or wrong Python
 Wrong virtual environment.
 ```bash
-source ~/venv-ardupilot/bin/activate
+source ~/.ardupilot_env
 pip install empy==3.3.4
 ```