Documentation, quickstart.rst (#191)

* gh-pages branch creation, updates to quickstart.rst

* Improper syntax fixes

* Create quickstart.rst

* Supporting images for quickstart.rst text

* Formatting cleanup

* Change tabs to spaces, remove extra newline

Signed-off-by: Justin Cinkelj <justin.cinkelj@xlab.si>

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Signed-off-by: Justin Cinkelj <justin.cinkelj@xlab.si>
Co-authored-by: Josh <josh.taubenheim@scalecomputing.com>
Co-authored-by: Justin Cinkelj <justin.cinkelj@xlab.si>

Author: 3 people