Added placeholder for addAll

public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/core/BiopetQScript.scala

@@ -88,6 +88,9 @@ trait BiopetQScript extends Configurable with GatkLogging {
   /** Get implemented from org.broadinstitute.gatk.queue.QScript */
   def add(functions: QFunction*)
 
+  /** Get implemented from org.broadinstitute.gatk.queue.QScript */
+  def addAll(functions : scala.Traversable[org.broadinstitute.gatk.queue.function.QFunction])
+
   /**
    * Function to set isIntermediate and add in 1 line
    * @param function