Merge pull request #231 from strubell/master

Update docs to reflect new artifactId, being on Sonatype, etc.
small fix to documentation, also trying to force rebuild?
Fix to NoSuchElementException in BagOfWords and test for same. Fixes #199.
Merge branch 'master' of https://github.com/factorie/factorie
Merge pull request #232 from strubell/master

Fix logger concurrency (issue #196), remove unused imports from Trainer.scala
Corrected some typos.
Merge pull request #233 from dainkaplan/master

Corrected some typos.
Merge pull request #234 from strubell/master

Fix bin/fac classify?
Merge remote-tracking branch 'upstream/master'