Revert "Removed Vignettes"

This reverts commit 453e4447b7d74c92b0786403faf7bb30b9e9e12e.
Revert "Added rgeos dependency"

This reverts commit a79d6d70726a128e83dd3b0c10730a6ea7fa95f7.
Revert "Suggested rgeos - required by CreateMasks"

This reverts commit c211476a225d3ea8509bb4a89580087bc9271b65.
Revert "Matrix parameters"

This reverts commit ca0a525528b874064c6da3d421973d0a95b9990a.