Improve Cygwin package

* Revert package ID back to original (to prevent issues with case sensitivity)
* Convert to automatic package
* Change installation folder to lowercase "cygwin"
* Remove "-N" installer command line argument
* Make use of "Get-BinRoot"
Merge branch 'PR11'
(GH-11) Added ketarin file and imported

As per instructions from @TomOne, added the ketarin file, and updated ketarin on the server to include new application.