Add docs for file upload (with girder web client library)
Add docs for file upload (with girder web client library)

Xarthisius/girder,chrismattmann/girder,kotfic/girder,sutartmelson/girder,salamb/girder,RafaelPalomar/girder,RafaelPalomar/girder,essamjoubori/girder,girder/girder,adsorensen/girder,data-exp-lab/girder,essamjoubori/girder,manthey/girder,manthey/girder,Xarthisius/girder,jcfr/girder,chrismattmann/girder,sutartmelson/girder,kotfic/girder,salamb/girder,Xarthisius/girder,jcfr/girder,Xarthisius/girder,jbeezley/girder,Kitware/girder,data-exp-lab/girder,sutartmelson/girder,salamb/girder,chrismattmann/girder,jbeezley/girder,kotfic/girder,essamjoubori/girder,Xarthisius/girder,essamjoubori/girder,jbeezley/girder,jbeezley/girder,kotfic/girder,jcfr/girder,salamb/girder,Kitware/girder,essamjoubori/girder,chrismattmann/girder,jcfr/girder,adsorensen/girder,opadron/girder,sutartmelson/girder,opadron/girder,msmolens/girder,data-exp-lab/girder,RafaelPalomar/girder,salamb/girder,data-exp-lab/girder,Kitware/girder,sutartmelson/girder,opadron/girder,msmolens/girder,adsorensen/girder,msmolens/girder,manthey/girder,manthey/girder,chrismattmann/girder,RafaelPalomar/girder,Kitware/girder,girder/girder,data-exp-lab/girder,msmolens/girder,girder/girder,opadron/girder,opadron/girder,adsorensen/girder,RafaelPalomar/girder,girder/girder,kotfic/girder,adsorensen/girder,jcfr/girder,msmolens/girder