Fix some typos
ActiveModel Serializers JSON
Merge branch 'master' of github.com:eiel/railsdoc.eiel.info
Merge pull request #14 from takiy33/date.md

Fix some typos
ActiveModel Serializers XML
Merge branch 'master' of github.com:eiel/railsdoc.eiel.info
ActiveModel::Validations::AbsenceValidator
update gem
ActiveModel Validations Acceptance
ActiveModel Validations Callbacks