title: neo4j - create different user authentication
body: <p>i am new to neo4j. 
  Can anyone tell me how to create different users </p>
  
  <p><code>(say user1 and user2)</code> with different authentication for database access like user1 can write to database but user2 can only read from database .. i have read the documentation but could not figure it out... 
      i am using <code>neo4j 2.0 with rest api from jquery and cypher</code>.</p>
  
  <p>i would be great if the process is properly explained..
  Thanks Alot</p>