Add a variety of examples

[bemasc]

Fixes #17

[enygren]

Thanks for writing these. These otherwise LGTM.

[paulwouters]

I thought one of the points of the HTTPS record was that you didn have to keep manually adding A/AAAA sync ups between the apex and www. of a zone ?

[bemasc]

HTTPS records allow apex aliasing (as in the next example), but only for clients that support HTTPS records. These examples mostly assume that compatibility with non-HTTPS-record-aware clients is required.

In this case, we could avoid duplicating the A/AAAA records by making www a CNAME to the apex (as in the multi-CDN example), but I thought that might not be the best choice for our simplest example.

[enygren]

Perhaps we just be clear that this retains compatibility (see suggestion above),

[seanturner]

@bemasc @enygren merge when ready; see email.