adding concept dimension reduction
setup.py for possible packaging
readme updated for ubuntu
better tokenizing of concepts
added ihac class and tests
added concept feature reduction to n=500
Merge branch 'ihac_test' of github.com:ftzeng/argos_cluster into ihac_test
cleanup
updated config file name
fixed some comments
Merge branch 'ihac_test' into clustering-alternatives
now using scipy for mean and std
fixed import errors
Merge branch 'master' into clustering-alternatives