Added setindex! for SubDataFrames
Added endof(g::GroupedDataFrame)
Merge pull request #232 from kmsquire/endof_GroupedDataFrame

Added endof(g::GroupedDataFrame)
Merge pull request #231 from kmsquire/SubDataFrame_setindex

Added setindex! for SubDataFrames
Merge branch 'master' of git://github.com/HarlanH/DataFrames.jl into kwargs