Added R-extras/3.1.1
Merge pull request #15 from TIGRLab/R-extras-3.1.1

Added R-extras/3.1.1
Include download link for AFNI
Updated AFNI and anaconda versions
Added R/3.0.2
Added site configuration to R/3.1.1.

This allows one to set defaults, currently just the default CRAN repo, for an R install
Added anaconda/2.1.0
Added R-extras/3.0.2
Updated minc-tools/2.2.00 build instructions
pyminc depends on whatever anaconda version