Merge pull request #1 from bmschmidt/master

Merge scale type patch
Fixed indentation
Changed nondescriptive "that" variable name
Reorganizing function as in M.Bostock's component

This helps removing the hardcoded parentSVG element
First version of the colorbar with the new structure: testing
Removed the formatter for the moment
changed call method in readme
positioning to be fixed
horizontal
fixed syntax, colorbar shown
margin added so that the ticks are not hidden
update svg from colorbar
removed image_thickness, the colorbar is drawn on its own svg
leave some margin for the leftmost tick
restoring pointers
converting index to use new enucatl-style items
improving live updates
demo handles colors properly
improving README