add login.vue keyup event

src/views/Login/Login.vue

@@ -9,10 +9,10 @@
                 <h1>登录界面</h1>
                 <el-form label-position="right" label-width="80px" :model="form">
                     <el-form-item label="账号：">
-                        <el-input v-model="form.userName" placeholder="请输入账号"></el-input>
+                        <el-input v-model="form.userName" @keyup.enter.native="onSignIn" placeholder="请输入账号"></el-input>
                     </el-form-item>
                     <el-form-item label="密码：">
-                        <el-input v-model="form.userPwd" placeholder="请输入密码" show-password></el-input>
+                        <el-input v-model="form.userPwd" @keyup.enter.native="onSignIn" placeholder="请输入密码" show-password></el-input>
                     </el-form-item>
                     <el-form-item>
                         <el-button type="primary" @click="onSignIn">登录</el-button>