Add docblocks for separator watcher prop

Author: mo3rfan

src/vue-numeric.vue

@@ -263,8 +263,13 @@ export default {
  })
  }
  },
- 
- separator(newValue, oldValue) {
+
+ /**
+ * Immediately reflect separator changes
+ * @param {String} newValue
+ * @param {String} oldValue
+ */
+ separator (newValue, oldValue) {
  if (newValue !== oldValue) {
  this.process(this.valueNumber)
  this.amount = this.format(this.valueNumber)