adds limit to 250 cities, sets sleep function to 7 seconds
change flickr API key
Merge branch 'master' of github.com:mmlkrx/project-sunset
replaces methods with attr_readers
added url_l param to api call
fixed large size error it appears
Merge pull request #10 from zacksheppard/fix-no-large-photo-size-error

Fixes no large photo size error