Heroku: Added Gemfile.lock as required by Heroku deploy
Heroku: Added ruby version dependency.
Add trailing slash to URL if missing
Heroku: Add Procfile to start web dyno
Heroku: Enable static asset serving
Merge pull request #6 from jasonhl/read_s3_bucket_listing_and_navigate_dumps

Add trailing slash to URL if missing
Merge pull request #7 from jasonhl/add_heroku_deployment_support

Add heroku deployment support
Fixes: Updated version to 0.0.3 and added size column to bucket listing output