mongodb3.0 db.addUser报错

> db.addUser("ydkt","ydkt")

--19T09::37.004+ E QUERY    TypeError: Property 'addUser' of object admin is not a function

    at (shell)::

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原来在mongodb3.0中addUser已被废弃，具体参考：

http://docs.mongodb.org/manual/reference/method/db.createUser/#create-administrative-user-with-roles

> db.createUser({user:'ydkt',pwd:'ydkt',roles:['readWrite','dbAdmin']})

Successfully added user: { "user" : "ydkt", "roles" : [ "readWrite", "dbAdmin" ] }

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