add ros exercises description

catkin_ws/src/learn_environment/task_pool/task_definitions.json

@@ -2,14 +2,14 @@
   "tasks": [
     {
       "title": "ROS Basics",
-      "description": "TODO: Add Description.",
+      "description": "Basic Tasks for learning ROS.",
       "topic": "ROS",
       "difficulty": "beginner",
       "folder": "/ros/ros_basics",
       "subtasks": [
         {
           "title": "Task 1",
-          "description": "TODO: Add Subtask Description Subtask 1.",
+          "description": "Explains the ROS system and implement a simple publisher.",
           "solution_file": "/ros_basics_1.ipynb",
           "evaluation_file": "/ros_basics_1_eval.py",
           "parallelized_evaluation_required": true,
@@ -17,7 +17,7 @@
         },
         {
           "title": "Task 2",
-          "description": "TODO: Add Subtask Description Subtask 1.",
+          "description": "Implement a simple subscriber.",
           "solution_file": "/ros_basics_2.ipynb",
           "evaluation_file": "/ros_basics_2_eval.py",
           "parallelized_evaluation_required": true,
@@ -25,7 +25,7 @@
         },
         {
           "title": "Task 3",
-          "description": "TODO: Add Subtask Description Subtask 1.",
+          "description": "Learn useful ROS commands and ROS topics",
           "solution_file": "/ros_basics_3.ipynb",
           "evaluation_file": "/ros_basics_3_eval.py",
           "reset_robot_before_executing": false
@@ -34,20 +34,20 @@
     },
     {
       "title": "ROS Intermediate",
-      "description": "TODO: Add Description.",
+      "description": "Using ROS to control the robot.",
       "topic": "ROS",
       "difficulty": "intermediate",
       "folder": "/ros/ros_intermediate",
       "subtasks": [
         {
           "title": "Task 1",
-          "description": "TODO: Add Subtask Description Subtask 1.",
+          "description": "Implement your first simple movement.",
           "solution_file": "/ros_intermediate_1.ipynb",
           "evaluation_file": "/ros_intermediate_1_eval.py"
         },
         {
           "title": "Task 2",
-          "description": "TODO: Add Subtask Description Subtask 2.",
+          "description": "Implement a more complex sequence of movements.",
           "solution_file": "/ros_intermediate_2.ipynb",
           "evaluation_file": "/ros_intermediate_2_eval.py",
           "parallelized_evaluation_required": true