Add mockjs example

Author: WhatAKitty

__mocks__/index.js

@@ -1,3 +1,4 @@
+import { Mock } from '../';
 
 export default {
   '/api/users': async (options) => {
@@ -32,5 +33,35 @@ export default {
     return {
       data: filtered,
     }
+  },
+  '/api/users/mockjs': async (options) => {
+    const all = Mock.mock({
+      'list|2': [{
+        'id|+1': 1,
+        'name': '@first @last',
+        'age|18-54': 1,
+      }]
+    }).list;
+    let filtered;
+    if ('undefined' !== typeof options) {
+      filtered = all.filter(item => {
+        let result = true;
+        const keys = Object.keys(options);
+        keys.forEach(key => {
+          const option = options[key];
+
+          if (item[key] && item[key] !== option) {
+            result = false;
+          }
+        });
+        
+        return result;
+      });
+    } else {
+      filtered = all;
+    }
+    return {
+      data: filtered,
+    }
   }
 }