Remove Moiré example.

Moved to <http://bl.ocks.org/714554>.
Remove cluster example.

Moved to <http://bl.ocks.org/4063570>.
Remove cluster-radial example.

Moved to <http://bl.ocks.org/4339607>.
Remove force example.

Moved to <http://bl.ocks.org/4062045>.
Remove area-defined example.

Move to <http://bl.ocks.org/3035090>.
Remove histogram example.

Moved to <http://bl.ocks.org/3048450>.
Remove bar example.

Replaced with <http://bl.ocks.org/3885304>.
Remove bundle-radial example.

Moved to <http://bl.ocks.org/1044242>.
Remove crimea-stacked-bar.

Replaced with <http://bl.ocks.org/3886208>.
Remove crimea-stacked-area.

Replaced with <http://bl.ocks.org/3885211>.
Remove horizon example.

Replaced with <http://bl.ocks.org/1483226>.
Remove partition-icicle-zoom example.

Replaced with <http://bl.ocks.org/1005873>.
Remove zoom-pan example.

Replaced with <http://bl.ocks.org/3892919>.
Remove hello-world examples.
Remove hierarchical bar example.

Replaced with <http://bl.ocks.org/1283663>.
Remove force-map example.

Replaced by <http://bl.ocks.org/1073373>.
Remove area-radial examples.

Replaced by <http://bl.ocks.org/3048740>.
Remove area example.

Replaced by <http://bl.ocks.org/3883195>.
Move sample HTML file to test/data.
Remove bubble example.

Replaced by <http://bl.ocks.org/4063269>.