Include example 2.

README.md

@@ -10,18 +10,19 @@ This repo provides instructions on the installation and use of code on the Stret
 5. [RViz Basics](rviz_basics.md)
 6. [Navigation Stack](navigation_stack.md)
 7. [MoveIt! Basics](moveit_basics.md)
-8. [Perception]
-9. [Microphone Array]
-10. [FUNMAP]
-11. [ROS testing]
-12. [Other Nav Stack Features]
-13. [FollowJoint Trajectory Commands]
-14. [4 Modes of Stretch]
+8. Perception
+9. Microphone Array
+10. FUNMAP
+11. ROS testing
+12. Other Nav Stack Features
+13. FollowJoint Trajectory Commands
+14. 4 Modes of Stretch
 
 
 ## Other ROS Examples
 To help get you get started on your software development, here are examples of nodes to have the stretch perform simple tasks.
 
 1. [Teleoperate Stretch with a Node](example_1.md) - Use a python script that sends velocity commands.  
-2. Mobile Base Collision Avoidance - Stop stretch from running into a wall.
+2. [Filter Laser Scans](example_2.md) - Publish new scan ranges that are directly in front of Stretch.
+2. Mobile Base Collision Avoidance - Stop Stretch from running into a wall.
 3. [Give Stretch a Balloon](example_3.md) - Create a "balloon" marker that goes where ever it goes.