Merge pull request #359 from lbergelson/lb_relax_add_parameter

Trivial update to QScript.scala

public/scala/src/org/broadinstitute/sting/queue/QScript.scala

@@ -105,7 +105,7 @@ trait QScript extends Logging with PrimitiveOptionConversions with StringFileCon
     this.functions ++= functions
   }
 
-  def addAll(functions: Seq[QFunction]) {
+  def addAll(functions: Traversable[QFunction]) {
     functions.foreach( f => add(f) )
   }