Merge branch 'merge-chain-serialization'

Conflicts:
	src/main/scala/cc/factorie/app/chain/ChainModel.scala
	src/main/scala/cc/factorie/util/TraversableExtras.scala
	src/test/scala/cc/factorie/TestSerialize.scala
Merge branch 'master' of https://github.com/factorie/factorie into merge-chain-command-line
Moved all private command-line objects inside Chain to clean the
namespace.
Merge pull request #72 from JackSullivan/merge-chain-command-line

Implementation of Chain models on the command line