I had noticed quite a number of casks that still have `license :unknown`
along with the generated placeholder message. I thought I would take
some spare time to update a few of the casks where I could find
relevant information. I've stuck with the guidance on the license
stanzas section of the Cask Language Reference. Where there was doubt,
I simply didn't update.
I'm happy to continue updating these from time to time, if you're
happy to receive them.
This adds support for avatron software AirDisplay
Had to link the uninstaller to their uninstall binary, which works but
it does cause a GUI prompt
Updated uninstall - Thanks @NanoXD