…. Fixed issue in this method.
…ess_than_or_equal_to and equal_to for validate_numericality.
…c_helper.rb to respect a BUNDLE_GEMFILE set on the command line.
…documentation refers to have_readonly_attributes.
For example, floating point attributes won't respond to #next, so in this case fall back to adding 1. This is not perfect, but it seems to rarely occur in practice since I wasn't able to find anyone else complaining about it.