fixes for ruffus pipeline - uses dummy files to indicate to ruffus that tasks have successfuly completed - dummy files needed because content of SRA files is unknown
fixes for ruffus pipeline
- uses dummy files to indicate to ruffus that tasks have successfuly completed
- dummy files needed because content of SRA files is unknown

AntonioJBT/CGATPipeline_core,CGATOxford/CGATPipelines,CGATOxford/CGATPipelines,AntonioJBT/CGATPipeline_core,CGATOxford/CGATPipelines,CGATOxford/CGATPipelines,AntonioJBT/CGATPipeline_core,CGATOxford/CGATPipelines,AntonioJBT/CGATPipeline_core