added twitter REST-ful API endpoint, and updated rep profile
updated jshint (only one now)
updating karma/grunt
twitter API on server (with test) and embedded in profile view (not tested)
require oauth to lowercase
Updated tests for Lawmaker model: get.
Added method stubs and dependencies in database Populator.
Implemented databasePopulator.fetchLegislators, and added tests, plus dev-dependencies.
Implemented addInfluenceData in databasePopulator, added async dependency, updated tests.