Adding DS_Store files to gitignore.
Adding DS_Store files to gitignore.

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