added aws sdk gem to deps
added configuration details for aws
removed image model and updated pet model to simply store an image url
updated app to push images to s3 before saving pets
merged image storing into master
added aws config info to travis yml
added vcr and webmock as testing deps
updated specs to work with new image practices
updated pet populator controller to run select against the database BEFORE uploading images
updated image repository to check the image exists, and use a default image if not
added animal description as link to show page
added details and fixed description on the show page
further improved show page to be more clear and succinct
removed the copyright from the layout
added confirmation to subscription
moved subscription methods into the subscription controller
updated subscription to require confirmation - email built
added check to notification sender that unconfirmed subscriptions will not receive emails
added tests around the confirmation endpoint
rewrote unsubscribe to use a form and post / get request, and added confirm page for manually entering confirmation code