Feature nightly

[wistcc]

This PR is related to issue #46

[martynchamberlin]

Do we know when in FireFox's pipeline they'll merge this nightly feature, chrome.storage.async? Until then, I don't think we'll notice much of a performance impact on localStorage, since the app is so lightweight.

I'm envisioning going with this PR and then creating a separate PR that has this commit in it, so we can just revert that once Firefox gets the feature into its main release.

[wistcc]

After a quick Google search, I didn't get a release date, but it seems that it takes a while because Nightly is the first version of 3 before the release version (which is Firefox).

So, we could just create an issue with this, specifying that we just need to change back chrome.storage.local to chrome.storage.sync.

What do you think? @martynchamberlin

[martynchamberlin]

Yep, I think that sounds good!

[martynchamberlin]

Closing this PR, in favor of #48. Created #52 so it'll be on our radar.