Microsoft's vision of an operating system that works on every device hasn't been fully realized yet, but you can stream games from your Xbox One to a Windows 10 machine relatively easily, as long as they're both on the same network. From the Settings pane, select 'All Settings' then 'Preferences'. Under 'Game DVR And Streaming' make sure the right options are enabled.
Switch to your Windows 10 computer, plug in your Xbox One controller with a USB cable (the drivers should install automatically), and launch the Xbox app from the Start menu. Pick the Xbox One connection (under Game Streaming), choose your console, and the connection is made. Finally, click 'Stream' to see the Xbox One interface in Windows 10.