Less logging from ALS iteration

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@566 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Command-line parameter optimizer: allow setting of num steps

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@567 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Issue 61 forgot javadoc update from last commit

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@568 0d189622-dca1-7e23-9e30-e8815eb7bd2f