Add data to vignettes directory.
Confused - I thought this built OK when I tested it locally.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/gradientforest@27 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Conformal mapping implementation based on Fortran code of Trefethen.
This is useful for colouring biplots often seen in biodiversity work.


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/gradientforest@28 edb9625f-4e0d-4859-8d74-9fd3b1da38cb