Added freebase categorization module
Merge pull request #4 from nrn/master

freebase categorization.
Update package.json to use ntwitter library which supports twitter 1.1

see https://github.com/AvianFlu/ntwitter
Switch to ntwitter

Well that was easy
jshint fixens
Move error logging over to new callback format
Merge pull request #5 from rrix/twitter-11

Port to ntwitter to use the new Twitter 1.1 API 8===D is better than 8==D