[Change] wrds_install, create .\data if ~exist

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>
[Add] second output args to wrds methods

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>
[Add] pwencode

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>