Added RStudio necessary project files.
Added cluster analysis function. This functions gets a matrix of data and outputs the cost versus number of cluster matrix.
Added the main script. This scripts read the data, perform cluster and pca analysis and create presentation tables.
Files generated by main. contain the centers of the clusters generated, the cost versus number of clusters, the biplot, the pca coordinates and the cluster members.
Added the presentation of the results.
Added the input data.