R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'signnet'

signnet::blockmodeling |  | 03 Blockmodeling | HTML | source | R code
signnet::centrality |  | 04 Centrality | HTML | source | R code
signnet::complex_matrices |  | 06 Complex Matrices | HTML | source | R code
signnet::signed_2mode |  | 05 Signed Two-Mode Networks | HTML | source | R code
signnet::signed_networks |  | 01 Signed Networks | HTML | source | R code
signnet::structural_balance |  | 02 Structural Balance | HTML | source | R code