RestFul api 批量删除

POST /posts/batch
     Body: { 'delete': [1, 2, 3, 4, 5, 10, 42, 68, 99] }
POST /posts/batch
     Body: { 'update': { 1: { title: 'My new title!' }, 2: { author: 'Walter White' } } }
POST /posts/batch
     Body: { 'create': [{ name: 'New post!', body: 'Some stuff..' }, { name: 'Another...', body: 'This is nifty!'}] }

DELETE /api/batch/articles 
    Body: {"article_ids" : [1,2,3]}