Staging on Heroku: http://productchase.herokuapp.com
Merge pull request #7 from hf/sd-staging-support

Staging on Heroku
Lists the products of the last 3 days ordered by votes. (Story: #76781168)
Merge pull request #5 from hf/sd-visitor-see-products

Visitor Can See Products Over Last 3 Days (Story: #76781168)
User Can See What Product They Upvoted (Story: 76781162)

The routing is the same as Producthun. User pages
created. User can see User's upvoted products on
his page, and vote for them if he wants to.

fix Gemfile.lock

fix conflict with timers gem