Feature Request: Export DataFrame to LaTeX about textables.jl

[lmh91]

I just needed this feature (DataFrame -> LaTeX-Table) and came up with this method.
But I did not look too much into the package so there might be better implementations.

using DataFrames
import TexTables

function TexTables.regtable(df::DataFrames.DataFrame)
    colnames = names(df)
    cols = map(icol -> TexTables.TableCol(colnames[icol], collect(1:nrow(df)), df[!,colnames[icol]]), 1:ncol(df))
    TexTables.regtable(cols...)
end
to_tex(regtable(df)) # df is the DataFrame to export