Merge pull request yahoo#313 from yahoo/leewyang_v1.3.2

v1.3.2 release

Merge pull request yahoo#283 from yahoo/leewyang_update_estimator

Update estimator examples

Merge pull request yahoo#259 from amantrac/master

add criteo example

bump version & docs

Merge pull request yahoo#230 from yahoo/leewyang_scala_license

add license header to scala files

minor cleanup