Clean up girder-install CLI documentation
Clean up girder-install CLI documentation

Xarthisius/girder,RafaelPalomar/girder,data-exp-lab/girder,manthey/girder,girder/girder,kotfic/girder,manthey/girder,jbeezley/girder,RafaelPalomar/girder,kotfic/girder,Xarthisius/girder,girder/girder,data-exp-lab/girder,manthey/girder,RafaelPalomar/girder,jbeezley/girder,adsorensen/girder,adsorensen/girder,RafaelPalomar/girder,girder/girder,Xarthisius/girder,Kitware/girder,jbeezley/girder,kotfic/girder,girder/girder,data-exp-lab/girder,kotfic/girder,jbeezley/girder,manthey/girder,data-exp-lab/girder,RafaelPalomar/girder,data-exp-lab/girder,Xarthisius/girder,adsorensen/girder,adsorensen/girder,adsorensen/girder,Kitware/girder,Kitware/girder,Kitware/girder,Xarthisius/girder,kotfic/girder