Add title to license file

[waldyrious]

The title is not legally mandated, but it's convenient for human consumption, and provides additional metadata; for that reason, it is typically included in the template text of this license, as recommended by OSI, SPDX, choosealicense.com, and others.

Note: This PR is part of my personal project to improve the consistency and visibility of the ISC license in open source projects. See github/choosealicense.com#377 for more details.

[waldyrious]

Hi @yarrick, just a friendly ping :)

[yarrick]

At the OSI page I consider that the page title and not part of the license text.

No thanks.

[waldyrious]

Oh, I see, the OSI page can be interpreted like that, yeah. I still see the distinction between the title and the body as merely formatting, but I can understand why you consider it to not be part of the license text based on how that page is set up.

For what it's worth, the SPDX registry explicitly includes the title in the license text, albeit as an optional element. (It does the same for the MIT's title, by the way — a license which is almost universally written with the title included.)