Merge pull request #27 from smonami/master

Proxy support for Twitter.stream()
pattern.web minor update to Facebook class
Merge branch 'master' of github.com:clips/pattern into origin
update offline documentation
pattern.vector update Classifier.test() + Classifier.baseline
update pattern.vector examples
pattern.en.wordnet small fix

Doing <code>"word" in pattern.en.wordnet.NOUNS</code>
no longer crashes on unicode strings
update unit tests