set fill to none for hexagons with no value

[danwild]

G'day, me again :)

Currently for hexbin layer - gaps in data appear as black hexagons.
This PR is to update so that if there is no value, there's no hexagon (well, no fill anyway).

Cheers,
Dan

[danwild]

bump

(let me know if I should do anything else to get this merged in)

[reblace]

I totally didn't realize this PR was here. I'm SO SORRY :)

Anyhow, can you ensure your merge is aligned with the latest master? I've done away with bower in favor of using npm for all dependency tracking and also I've migrated to d3 v4. Your PR looks to be reintroducing the bower dependencies.

[danwild]

@reblace aha no worries that happens to me all the time ;)

mmm I had just merged your latest master in, can't see .bowerrc, bower.json files etc. in my branch so shouldn't be any conflict?

[reblace]

It's the ./src/lib directories. If you check the master on this repo, the ./src/lib directory is now gone.

[danwild]

ah ok, just gave them the flick

[reblace]

ok, about to get some sleep, but will check this out tomorrow or later this week. Thanks for the contrbution!