Completed first test for viewing offers
can create an offer
can click on offer on main feed to see its page
Merge pull request #1 from MBottjer/master

Currently Implemented Devise User
added product, product description, and price to offer
Added purchase offer button to offer pages
added timeago in words and sorted feed by time, newest first
Added time since offer on offer page
implementing business sign up
Merging preliminary users/business functionality and basic offer functionality
Fixed tests from merge
Started tests for following a business