legion: adding some documentation
legion: adding some documentation

sdalton1/legion,chuckatkins/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,sdalton1/legion,chuckatkins/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,chuckatkins/legion,StanfordLegion/legion,chuckatkins/legion