We'll see if it happens this year, but for what it's worth Coinigy has this feature on their 2017 roadmap. Sorry if someone already mentioned this, but I didn't see it in the comments anywhere.

This video from Dec 2016 details their 2017 roadmap - which includes a lot of other awesome things in the works as well, like an iOS app, more customizability of the web interface, and even Coinigy's own exchange. Starting at 25 minutes he goes over the ChartScanner they're working on (though he doesn't give much detail).