lib/node_tracers.js
function RawZipkinTracer(scribeClient, category) {
  this.scribeClient = scribeClient;
  this.category = (category) ? category : 'zipkin';

  EndAnnotationTracer.call(this, this.sendTraces);
}
function RawZipkinTracer(scribeClient, category) {
  this.scribeClient = scribeClient;
  this.category = (category) ? category : 'zipkin';

  EndAnnotationTracer.call(this, this.sendTraces);
}
A tracer that records to zipkin through scribe. Requires a scribe
client ({node-scribe}).

@param {scribe.Scribe object} scribeClient The client to use to write to
scribe
@param {String} category The category to use when writing to scribe -
defaults to "zipkin" if not passed