fix the ambiguous import error in TestDecisionTree class.
Merge pull request #106 from cllu/master

fix the ambiguous import error in TestDecisionTree class.
optimize: adding automatic gradient checking code
app.nlp.pos.ForwardPosTagger: re-enabling the sure tokens mechanism, minor clean ups
app.nlp.parse: added tester main in TransitionBasedParser
Merge branch 'master' of github.com:factorie/factorie
running of code examples explained
how to run one of the tutorial examples with maven
how to run one of the tutorial examples with maven
Merge pull request #108 from ahane/doc-changes

How to run examples in README.md
Merge remote-tracking branch 'upstream/master' into joint-parse
small changes to make new parse features a little faster