Axes props and their docs

[jdelafon]

The docs should indicate that props are passed as

<BarChart {...props} {...cartesianChartProps} {...axisProps} />

Then you can link to the docs for the cartesian chart mixin and Axes, and remove all stuff concerning them that is repeated for every chart - incompletely and soon inconsistently, because it needs to be maintained at many places.

Proposal: cartesianChartProps and axisProps would actually better be passed as a single object prop, e.g.

<BarChart {...props} xAxis={{tickValues, tickPadding}} />

so that prop names remain consistent across components (no prefix), for maintainability (1 prop to transfer), and to simplify the docs (1 prop to document for charts, then link to the Axes docs).