Added shields to indicate the supported distros of the tutorials.

ralph-lange · ralph-lange · commit b9b5f7a900a7 · 2021-07-14T14:37:47.000+02:00
Signed-off-by: Ralph Lange &lt;ralph.lange@de.bosch.com&gt;
diff --git a/_docs/tutorials/core/first_application_linux/index.md b/_docs/tutorials/core/first_application_linux/index.md
@@ -3,7 +3,7 @@ title: First micro-ROS Application on Linux
 permalink: /docs/tutorials/core/first_application_linux/
 ---
 
-## Target platform
+<img src="https://img.shields.io/badge/Written_for-Foxy-green" style="display:inline"/> <img src="https://img.shields.io/badge/Tested_on-Galactic-green" style="display:inline"/> <img src="https://img.shields.io/badge/Tested_on-Rolling-green" style="display:inline"/>
 
 In this tutorial, you’ll learn the use of micro-ROS with Linux by testing a Ping Pong application.
 In the follow-up tutorial [*First micro-ROS application on an RTOS*](/docs/tutorials/core/first_application_rtos/),
diff --git a/_docs/tutorials/core/programming_rcl_rclc/index.md b/_docs/tutorials/core/programming_rcl_rclc/index.md
@@ -3,6 +3,8 @@ title: Programming with rcl and rclc
 permalink: /docs/tutorials/core/programming_rcl_rclc/
 ---
 
+<img src="https://img.shields.io/badge/Written_for-Foxy-green" style="display:inline"/> <img src="https://img.shields.io/badge/Tested_on-Galactic-green" style="display:inline"/> <img src="https://img.shields.io/badge/Tested_on-Rolling-green" style="display:inline"/>
+
 In this tutorial, you'll learn the basics of the micro-ROS C API. The major concepts (publishers, subscriptions, services,timers, ...) are identical with ROS 2. They even rely on the *same* implementation, as the micro-ROS C API is based on the ROS 2 client support library (rcl), enriched with a set of convenience functions by the package [rclc](https://github.com/ros2/rclc/). That is, rclc does not add a new layer of types on top of rcl (like rclcpp and rclpy do) but only provides functions that ease the programming with the rcl types. New types are introduced only for concepts that are missing in rcl, such as the concept of an executor.
 
 * [Creating a node](#node)
diff --git a/_docs/tutorials/core/teensy_with_arduino/index.md b/_docs/tutorials/core/teensy_with_arduino/index.md
@@ -3,13 +3,15 @@ title: Teensy with Arduino
 permalink: /docs/tutorials/core/teensy_with_arduino/
 ---
 
-## Target platform
+<img src="https://img.shields.io/badge/Written_for-Foxy-green" style="display:inline"/>
 
 In this tutorial you will learn how to connect Teensy with micro-ROS and ROS 2. 
 You will also learn how to install micro-ROS agent in Linux systems to communicate with 
 Teensy-based Arduino board using Arduino IDE. This tutorial will also cover a 
 simple publisher topic published from teensy and subscribed using ROS 2 interface.
 
+## Target platform
+
 To start with, we will need a host computer with either having a native 
 Ubuntu 20.04 installed ROS 2 Foxy or using a docker version of the freshly build ROS 2 Foxy 
 from this link. Now let us also look at the connection diagram which will help us 
@@ -18,6 +20,7 @@ understand the full picture better.
 ![Illustration of Connection diagram of Teensy 3.2 with Host PC running ros2 and micro-ros-agent](Teensy_micro_ros_connection.png)
 
 ## Installing ROS 2 and micro-ROS in the host computer: 
+
 Note: These first few steps are the same as in the micro-ROS installation page as in this link
 
 For this tutorial you have to install ROS 2 Foxy Fitzroy on your Ubuntu 20.04 LTS computer. 
@@ -193,3 +196,5 @@ If we listen to the topic we will see something like this:
 ![Illustration of ros2 topic showing data](topic_show.png)
 
 The integer msg data increasing in each cycle.
+
+_Note: This tutorial was first published by the author [Manzur Murshid](https://github.com/shazib2t) on https://manzurmurshid.medium.com/how-to-connect-teensy-3-2-with-micro-ros-and-ros2-foxy-6c8f99c9b66a._
