add tags to the list of stanzas

[tcarlsen]

at the moment you need to know what exact application you want to install for using homebrew-cask, adding tags to the list of stanzas will make the brew cask search function more useful.

Example for the Atom cask

tags: [
    'ide',
    'editor'
]

[vitorgalvao]

The suggestion is welcome, but we don’t intend to become a discoverability service. This has been discussed and refused multiple times, as it is not part of the goals of homebrew-cask. Amongst other things, the logistics are unsustainable.