Add template mixin to LineWithFocusChart
Add template mixin to MultiBarChart
Added template Mixin to MultiBarHorizontalChart
Add template mixin to PieChart
Add template mixin to ScatterChart
Add StackedAreaChart

Add Working example of StackedAreaChart
Merge branch 'advanced_templated' of https://github.com/oz123/python-nvd3 into advanced_templated

Conflicts:
	nvd3/lineWithFocusChart.py