1.2.1

Fixes scalanlp#34: update README and build.sbt for v1.2.1.

Nak v1.2.0: incorporated breeze-learn, added LSH

Nak v1.1.3: purged OpenNLP code. +hashing trick, +PCA.

Nak v1.1.2, new API and much simplification.

Nak v1.1.1, w/ liblinear classification.

Nak v1.1.1, w/ k-means clustering.

Nak v1.0