write_migrn: Create input file for Migrate-N
In andersgs/microsimr: Simulate microsatellite data using Hudson's ms program

Not a function for general use, please use save_microsimr() instead

1	write_migrn(genotypes, filename, n_ind, n_pop, n_loc, title)

`genotypes`	A matrix outputted by sim_microsats function.
`filename`	A character string indicating the filename to be used for saving the input file.
`n_ind`	An integer indicating the number of sampled diploid individuals if n_pop = 1, or a vector of integers indicating the number of diploid individuals sampled in each population in n_pop > 1.
`n_pop`	An integer indicating the number of populations simulated.
`n_loc`	An integer indicating the number of loci simulated.
`title`	A character string to be used as the title of the input file, only used if the format allows it.