WIP:  R wrapper for flashpca using RcppEigen
Fixed https://github.com/gabraham/flashpca/issues/2
Added verbose flag
Renamed R package from "flashpca" to "flashpcaR" to avoid name conflicts
Added verbose flag to all output
Example driver script for flashpcaR
Merge branch 'devel'
Added ability to save loadings; scaling U and V correctly to match prcomp
Cleaned up command line args
Added option to save SNP standardization params
Clean up input validation
Updated HapMap3 plots
Added README docs about flashpcaR
Updated plots