[galaxy-dev] Dealing with qiime output

Hello galaxy devs, I installed qiime-galaxy to my local galaxy (running jobs on a cluster). The split_libraries.py tool outputs a dir of files. How do I go about displaying these files in the history panel after the tool finishes running? I have been trying to look at the composite datatypes guide, but I really am having a hard time wrapping my head around it. Should I be creating a new composite datatype for any tool that outputs directories (each with diff files to display). Is there anyway to have galaxy automatically unzip output directories to history? Thanks Ravi