Added double-click event to scatter plot.
Merge pull request #1 from jeremyhewett/ScatterDblClick

Added double-click event to scatter plot.
Updated version in bower.json.
Added double click to actual source code so that it is built with grunt.
Fixed dblClick when not using Voronoi.
Exposed slice percent value to tooltip callback.
Merge pull request #6 from jeremyhewett/ExposePiePercent

Exposed slice percent value to tooltip callback.
Slightly increased text width estimate formula
to what looks like a more accurate estimate.
Merge pull request #7 from jeremyhewett/TextSpacing

Slightly increased text width estimate formula