Adding QR codes for directions to restaurants. Adding basic google maps ...

@mmeiers @donnapep @stulees @swbloom Added in some basic QR codes giving directions to the reverse of the cards- still to add styling similar to @mmeiers cool focus effect. 

Touch control now works by touching the images on the cards to flip. Heart icon is now hidden on the reverse. Card flip still gives a flicker effect about 15% of the time so will work on that.

Need to change default map view away from San Francisco - clicking on card image displays relative direction on map. Still to add default 'you are here' indicator and custom styling to map + remove drag functionality etc.

Now that web components are being used/tested I am hosting the working copy here: http://www.cameroncodes.com/webcomponents/

Thanks!