added json gem to Gemfile, added methods to search_api model
Merge pull request #9 from RossWittenberg/quiz_images

Quiz images
Merge pull request #10 from RossWittenberg/search_api

added json gem to Gemfile, added methods to search_api model
made new migration to drop 'name' column from quiz_images. filepath has the same value making 'name' superfluous. i also adjusted the model and current seed file to reflect this change.