title: How do I read line by line a text file in ruby (hosting it on s3)?
body: <p>I know I've done this before and found a simple set of code, but I cannot remember or find it :(.</p>
  
  <p>I have a text file of records I want to import into my Rails 3 application.  </p>
  
  <p>Each line represents a record.  Potentially it may be tab delimited for the attributes, but am fine with just a single value as well.</p>
  
  <p>How do I do this?</p>