feature: rate组件增加character自定义字符配置项

examples/routers/rate.vue

@@ -4,6 +4,11 @@
         <Rate allow-half v-model="valueHalf"></Rate>
         <Rate clearable v-model="valueClear"></Rate>
         <Rate clearable allow-half  v-model="valueClearHalf"></Rate>
+        <Rate 
+            allow-half 
+            show-text
+            v-model="characterValue"
+            character="好"/>
         <!--<Rate show-text v-model="valueText"></Rate>-->
         <!--<Rate show-text allow-half v-model="valueCustomText">-->
             <!--<span style="color: #f5a623">{{ valueCustomText }}</span>-->
@@ -22,6 +27,7 @@
                 valueDisabled: 2.4,
                 valueClear: 1,
                 valueClearHalf: 1.5,
+                characterValue: 2.5
             }
         }
     }