想入门express看的是置顶的【一起学node.js】(操作系统是winXP)进度到第一章mongodb这部分时在package.json中添加"mongodb": "" 后执行npm install报错，错误如下：*

D:\blog>npm install
npm WARN package.json blog[@0](/user/0).0.1 No repository field.
npm WARN package.json blog[@0](/user/0).0.1 No readme data.
npm WARN package.json cookie-signature[@1](/user/1).0.1 No repository field.
npm WARN package.json methods[@0](/user/0).0.1 No repository field.
npm WARN package.json fresh[@0](/user/0).1.0 No repository field.
npm WARN package.json range-parser[@0](/user/0).0.4 No repository field.
npm WARN package.json send[@0](/user/0).1.0 No repository field.
npm WARN package.json bytes[@0](/user/0).2.0 No repository field.
npm WARN package.json pause[@0](/user/0).0.1 No repository field.

package.json如下：

{
"name": "blog",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js"
},
"dependencies": {
"express": "3.2.6",
"ejs": "*",
"mongodb": "*"
}
}

求解决方法继续下一步学习