README example fails

[cscherrer]

Looks like rmlines is not exported:

julia> println(func |> rmlines)
ERROR: UndefVarError: rmlines not defined
Stacktrace:
 [1] top-level scope at REPL[4]:1

julia> println(func |> JuliaVariables.rmlines)
[]function (f)(x)
    y = (@global +)(@cell x, 1)
    let y = (@global +)(@cell y, 1)
        [cell y,cell x]((@global +)(@cell x, @cell y, @z) for z = (@global :)(1, 10))
    end
end

[cscherrer]

https://github.com/thautwarm/JuliaVariables.jl/pull/4