Added Gemfile.lock and .rbenv files to .gitignore.
Upgraded activerecord/rails to version 4.0.0.rc1.
Updated validator to match Rails 4.
Removed Rails 3 dummy app.
Generated dummy rails 4 project.
Configured dummy app.
Fixed syntax errors.
Added fields to the dummy_models table.
Fixed var typos.
Upgraded database_cleaner gem to 1.0.0.RC1. Older releases had issue with Rails 4.
Implemented validation for unique_field.