View source for Fst PCA

Matteo Fumagalli has been working on methods to estimate Fst and doing PCA/Covariance based on ANGSD output files.

The main documentation for this is found here:
https://github.com/mfumagalli/ngsTools

=Fst=
# Generate .sfs files from each population using ANGSD [[RealSFS]]
## using a 2D-SFS as a prior, estimated using ngs2dSFS
## using marginal spectra as priors, estimated using emOptim2

=PCA=
More information here:
https://github.com/mfumagalli/ngsTools#ngscovar