#49: implemented first complete kmeans post-processing approach
#49 just renamings. clusters were named categories at some places.
#49: fixed compile_with_mahout.sh script
compilation of multiple dependent java files was not working
#49: fixed a path bug in KMeansPostprocessor
it was appending "clusteredPoints" instead of "/clusteredPoints" resulting in a non-existing path
#49: fixed bug in the writeSorted() method
it was writing unpritable characters due to the fact that bw.write(int), in contrary to bw.write(String), uses the integer to determine the character with this encoding
#49: trying to find the reason for the missing line in chain 012 as documented at the end of #82.