Add geolocation element examples

[chrisdavidmills]

This PR adds some basic <geolocation> element examples to the repo.

I am linking to examples here rather than embedding them on the documentation pages because when I tried using live samples, the examples wouldn't work due to a limitation on the number of <geolocation> elements allowed on the same page.

[pepelsbey]

I managed to crash Chrome right when I asked it for geolocation permissions for the first time. I couldn’t reproduce it again. So I think it wasn’t caused by the demo itself 😬

Otherwise, pretty cool! Thanks.

I only noticed that <button id="fallback"> is never queried as #fallback in querySelector, only as button. So I would either remove id="fallback" (since it’s not used) or do querySelector("#fallback"). I think the latter one is slightly more consistent with the rest of the code. On the other hand, there’s querySelector("p"), so I’m not 100% sure.

Up to you!

[chrisdavidmills]

I managed to crash Chrome right when I asked it for geolocation permissions for the first time. I couldn’t reproduce it again. So I think it wasn’t caused by the demo itself 😬

Ha, yes, that happened to me once or twice, too. I reported the crash each time, so hopefully they'll sort that out.

I only noticed that <button id="fallback"> is never queried as #fallback in querySelector, only as button. So I would either remove id="fallback" (since it’s not used) or do querySelector("#fallback"). I think the latter one is slightly more consistent with the rest of the code. On the other hand, there’s querySelector("p"), so I’m not 100% sure.

Good spot. I've updated the IDs to make them a bit more consistent in my latest commit. Shouldn't take too long to fix in the accompanying docs.

Cheers!