* Add math median example and unit tests
* Update output of other all math ls command examples to keep consistent with math median output
* Fix output of math max example
* Update output of other math commands using pwd examples to keep data consistent
* Move sum tests into math directory
* Move sum documentation over to math documentation
One sum example already existed in the math examples and a few of the others were outdated and didn't work, so I only moved one over, and updated their output
* Remove no-longer-in-use mod statement
* Adding math docs
* Add some comments to calculate
* Remove redudant message
Message already shows up in subcommands list
* Added not working example
Accidentantly
* Remove table
