title: Scala Spark - Reduce RDD by adding multiple values per key
body: <p>I have a Spark RDD that is in the format of (String, (Int, Int)) and I would like to add the Int values together to create a (String, Int) map.</p>
  
  <p>This is an example of an element in my RDD:
  res13: (String, (Int, Int)) = (9D4669B432A0FD,(1,1))</p>
  
  <p>I would like to end with an RDD of (String, Int) = (9D4669B432A0FD,2)</p>