Configure rspec to load supporting classes

Via this lines of code:
`ENGINE_RAILS_ROOT=File.join(File.dirname(__FILE__), '../')`
`Dir[File.join(ENGINE_RAILS_ROOT, "spec/support/**/*.rb")].each {|f| require f }`

Signed-off-by: Joan Tiffany Siy <joan@teamcodeflux.com>
Create test class for the User model

Signed-off-by: Joan Tiffany Siy <joan@teamcodeflux.com>