created alias for DonutChart that extends PieChart
lots of bug fixes! adding "slices" option to PieCharts
added slices option to PicCharts
Merge branch 'piechart'
updated pie chart examples
Merge branch 'piechart'
added optionsToJSON() on master chart
updated areachart examples
updated examples
converted master chart addOption to switch statement, added datalessRegionColor to GeoChart
fixed some bugs in legend, working on GeoChart
bug fixes in config objects
added regions!
created sizeAxis
added setter for sizeAxis to GeoChart
fixed int|flaot bug in sizeChart
added between helper function, added markerOpacity
added magnifyingGlass support
replaced all (var) with (public)
adding second geochart example