Increase clusters in contrived bool data and update test to match - The unit test for the contrived data set was running into an error,   "more clusters than distinct data points". This meant that you only   actually had three clusters (since you only put ones in three   columns), and running kmeans using k=2:15 was too many. Maximum   you could have was 3. So this increases the number of clusters in   the data set to 6 and also updates the unit test to test for k=2:6.
Increase clusters in contrived bool data and update test to match
- The unit test for the contrived data set was running into an error,
  "more clusters than distinct data points". This meant that you only
  actually had three clusters (since you only put ones in three
  columns), and running kmeans using k=2:15 was too many. Maximum
  you could have was 3. So this increases the number of clusters in
  the data set to 6 and also updates the unit test to test for k=2:6.

catterbu/receptormarker,nsh87/receptormarker,nsh87/receptormarker,catterbu/receptormarker,catterbu/receptormarker,nsh87/receptormarker,nsh87/receptormarker,catterbu/receptormarker,catterbu/receptormarker,nsh87/receptormarker