Typeahead.js fix

Changes:
- Wrapped the Typeahead.js code in a so it may be called on a page load OR document.ready()
- Removed the Typeahead.js source from application.js (bad convention)
- Added a Typeahead.css file for the CSS fixes associated with Typeahead and BS3.

Notes:
* You'll have to run bundle exec rake assets:clean and bundle exec rake assets:precompile locally before pushing to Heroku.

* You will have to add the 'twitter-typeahead-rails' gem to your Gemfile and run a bundle install.