Update docs examples

Author: IsabelParedes

docs/_static/exBasic.png

@@ -0,0 +1,51 @@
+Examples
+========
+
+Basic Robot
+-----------
+
+This robot is simply two geometric components with a single prismatic joint.
+
+.. image:: _static/exBasic.png
+    :alt: Basic robot, a cylinder and plate, shown in viewer
+
+
+Niryo
+-----
+
+The examples include a simplified version of Niryo which links a mesh file to
+create the gripping mechanism.
+
+.. image:: _static/exNiryo.png
+    :alt: Simplified Niryo robot shown in viewer
+
+.. note::
+    The *Path* is relative to the directory where JupyterLab is launched from. 
+    When modifying, this path should point to the location of the robot
+    description packages containing the mesh files. In this case, the path is
+    by default set to */examples* because this is the parent directory of the
+    robot description packages.
+
+.. image:: _static/exNed2.png
+    :alt: Ned 2 robot shown in viewer
+
+Spot
+----
+
+.. image:: _static/exSpot.png
+    :alt: Spot robot shown in viewer
+
+Panda
+-----
+
+Xacro files are also supported. However, it is not (yet) possible to search for
+packages with ``$(find robot_description)``. 
+
+.. image:: _static/exPanda.png
+
+
+T12
+---
+
+.. image:: _static/exT12.png
+    :alt: T12 robot shown in viewer