Comment additions
Merge branch 'clustering'
Updated README
Consistency improvements in internal feature vector
representation. An array with integer keys will be passed
through array_count_values to be made a frequency vector.

Bonus: By doing that in multinomial_nb_classifier we have shaved
off a few function calls and additions
Initial commit for the psr-0 compatibility changes
Modified the autoloader and the composer.json

Changed the autoloader to a psr-0 compatible one
Changed the composer.json to use a psr-0 autoloader
Commited the file deletions
Merge branch 'psr-0-transition'
Merge branch 'master' into hierarchical-clustering

Transition to psr-0

Conflicts:
	autoloader.php