* Update README.md

Added a Tutorials, Bugs, and Updating software section.

Additionally updated the about us section with a more in-depth summary of what the software is meant to do alongside some photograph examples of its usage. 

These photographs and all information were sourced from the website to ensure accuracy.

* address comments from original PR

* update images

* additional cleanup

* fix image captions

* move images to the top

* fix links

* cleanup Bugs and Updating Webots sections

* clarify Bugs section

* add line breaks

* reorder sections

* grammar cleanup

* cleanup Building from Source section

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Co-authored-by: Remingtonewing <92884659+Remingtonewing@users.noreply.github.com>
Co-authored-by: Olivier Michel <Olivier.Michel@cyberbotics.com>