Added initial ignore file.
added Gruntfile.js, package.json and jshint files
reset default bower directory
add default dotplot configuration
dotplot configuration should update defaults.
added svg translate helper
added extent to the plot
render an empty plot
add title to plot
add default style to the dotplot
rename viewport width and height
add rotate and transform helpers
added axis labels
add support for multiple coordinate systems
added the viewing rectangle
added rectangle
added initial quadtree
added quadtree splitting
added clear to quadtree
added line and point support to contain

Note: line and point require the dataType attribute,
  otherwise contain will assume the dataType is a rectangle.