Bump Rails to v3.2.12
Bump Ruby to patch level 385

@bkeepers,et al:
This is a complete aside, but ... nodeincrease in the
severity, scale, and frequency we ought not trust in tools
that silently modify our environments. IMHO, this file should be removed
entirely.
Remove .ruby-version
Add Mega article to reading section
Update schema with defaults
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
Use Postgres as the database
Convert public_key to a text field
Configure postgres on travis
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 branch 'master' of github.com:github/swordfish

* 'master' of github.com:github/swordfish:
  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
Merge pull request #87 from github/postgres

Use Postgres
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