#19 fix send multiple / single object in to steps.

lib/bill-diff/view.js

@@ -32,12 +32,15 @@ DiffView.prototype.showDifference = function (diff) {
 /**
  * Change bill content for the moment only when click in some step.
  *
- * @param {Object} steps containt the current step and the previus.
+ * @param {StepSchema} currentStep The Step Schema to show up in the view.
+ * @param {StepSchema} previousStep Previous Step for calculate difference.
  */
-DiffView.prototype.changeBillContent = function (steps) {
-//TODO: the only purpose of have 2 steps in the same view, is to be compare them.
-//Maybe this should be resolved outside of this view.
-  var diff = this.calculateTextDiff(steps.step, steps.previousStep);
+DiffView.prototype.changeBillContent = function (currentStep, previousStep) {
+  //TODO: the only purpose of have 2 steps in the same view, is to be compare them.
+  //Maybe this should be resolved outside of this view.
+
+  //Here should append the current text, and anchor the differences, calculated.
+  var diff = this.calculateTextDiff(currentStep, previousStep);
   this.showDifference(diff);
 };