fixing bug "pie char is not shown when only one option has votes"

[flecox]

the problem was.. when we have more than one option and all votes are in only one of them.
the scripts tries to draw an arc using paper.path.. starting at a position and ending at the same position,
because the positions are the same this doesn't draw anything.

so I've added a fix..

if the option 's value is equal to the total then draw a circle.

I've also minified the file

regards

[davidgoli]

+1

[blackwatertepes]

I've added a fix in issue #156, which removes the stroke from the sectors valued at 0

[Nettsentrisk]

This line should be:
var circle = paper.circle(cx, cy, r).attr({ fill: opts.colors && opts.colors[i] || chartinst.colors[i], stroke: opts.stroke || "#fff", "stroke-width": opts.strokewidth == null ? 1 : opts.strokewidth });

Otherwise you're not getting the colors set up in options.