Move fixture helper into a module
Move key features into rpsec
Use database cleaner in specs
Move item feature to rspec
Always clean db with truncation
Merge branch 'postgres' into rspec-acceptance

* postgres:
  Configure postgres on travis
  Convert public_key to a text field
  Use Postgres as the database
Add launchy and pry for debugging
Remove cucumber
Merge remote-tracking branch 'origin/master' into rspec-acceptance

* origin/master:
  formatting
  Use base64 from forge
  Fix typo
  reverting changes to db/schema.rb
  add/delete files
  moving to forge for aes
  Add info on joining the core team
  draft of core team docs
Upgrade poltergeist and dependencies
Base64 encode data encrypted with private key
Use `create_item` helper in acceptance spec
Merge pull request #88 from github/rspec-acceptance

Rewrite Cucumber features as RSpec acceptance specs