R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'rnn'

rnn::GRU_units |  | GRU units | HTML | source | R code
rnn::LSTM_units |  | LSTM units | HTML | source | R code
rnn::basic_rnn |  | Basic Recurrent Neural Network | HTML | source | R code
rnn::rnn |  | Recurrent Neural Network | HTML | source | R code
rnn::rnn_units |  | RNN units | HTML | source | R code
rnn::simple_attention |  | Simple Self-Attention from Scratch | HTML | source | R code
rnn::sinus |  | Sinus and Cosinus | HTML | source | R code