Added scales to the colouring on both the map rectangles and the pretty-lines, for the purposes of showing density in colour and otherwise to make things look colourful.

Cleaned some garage out of the map.js
Added strokes to the pretty-line elements. Creates a weird visual effect.

Not sure if the images are actually flexible....but tired and must sleep now.

Adjusted zoom on map. Adjusted SVG height, to stop some clipping.
Merge pull request #11 from thomasgwatson/d3_scales

D3 scales