Make k an optional parameter and add comments to classify method
Add another cluster of points to spec
Change gem version and corrected typo
Changed documentation for KMeans
Changed the way parameters are passed to the 'classify' method
Refactor code
Choose between initializing centroids or centroids specified by user
Turn validate method to a Cluda method
Validate centroids given by the user
Add testing for smart clustering
Added more testing and add distance value in each point of the cluster.