Correction to error in knn.error.models has not yet been added to R package

[scharch]

In version 2.2.0 of the R package, the parameter save.model.plots to knn.error.models is unused and instead it saves plots only if (length(vic) < length(ids)) {. In R/functions.R (line 1264) this was corrected to if (save.model.plots) { by commit 20c91c9 on January 16th, 2016, but it apparently wasn't incorporated into the R package...