make some changes for test code
add klass_eval to base module
add support for factory_girl traits
add Array#has method
Add Array#serial_update method
remove existing associate objects using destroy_all instead of delete_all
Add ActiveRecord::a method
add some methods
change method names
check for valid directives in Array extension
check conflict directives in array extension methods
delegating methods
delegate methods in activerecord extensions to methods in array extentions
add be_an_array_of matcher
refactor active_record.rb
refactor active_record.rb