Added minimum zoom to the map.

Started constructing a search field
Shows searchfield in the middle top of the map
Added autocompleting search field to the map.
Update of done list
Chucked the map into a global variable, so it can be referenced across the application.

Added autocomplete feature to the search field

Moved the d3 map marker stuff into a separate js file
Touched up background colour with a smidge of yellow.

Attempted to mitigate against the weird and frustrating ghost anchor div problem I am having at the bottom of the graff-holder div. It's pushing the bottom lip of the div out by a few pixels, so have hacked a specific padding to work-around it.
Move d3 marker shenanigans to a new js file.
Merge pull request #14 from thomasgwatson/googleMapStyles

Google map styles