Updated 'url' in '_config'
Updated 'url' in '_config'

Why:

* Theme is not applying CSS

This change addresses the need by:

* Changed the 'url' string in '_config.yml' to 'firstcitysoftware.com'

firstcitysoftware/firstcitysoftware.github.io,firstcitysoftware/firstcitysoftware.github.io,firstcitysoftware/firstcitysoftware.github.io