ADD file via upload

1.0 pages rollcall.wxml

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+<view class="container">
+  <button bindtap="randomRollCall">随机点名</button>
+  <input type="number" placeholder="输入评分" bindinput="inputScore" />
+  <button bindtap="updatePoints">更新积分</button>
+  <view wx:if="{{selectedStudent}}">
+    <text>当前点名学生: {{selectedStudent.name}} ({{selectedStudent.id}})</text>
+    <text>当前积分: {{selectedStudent.points}}</text>
+  </view>
+  <view wx:if="{{students.length === 0}}">
+    <text>没有学生信息</text>
+  </view>
+</view>