added introduction to comparison

documentation/docs/robots/Comparisons.md

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+# Our project
+
+With our project, we want the people to start moving more. Since people are becoming less fit, especially elderly people, we wanted to design something that would help people to get in shape. However, not every one wants to do it alone or wants to go to the gym to get in shape. We aim to solve 2 problems with our project. We want people to get in shape, and we want people to be more social. We came to the conclusion that we want to create a social robot that helps with basic exercises. Furthermore, we also want it to have a point system, so people can compete against each other. This helps to bind people together while pushing them to exercise.
+
+
+# NAO BOT
+
+### Why are we not using the NAO bot
+
+![NAO](NAOBOT.png) The NAO robot is a humanoid robot used for research and education. The robot was developed by the French company Aldebaran Robotics, which was acquired by the Japanese Softbank Robotics in 2015. We did not end up using this robot for our project