add setting model
add: settings controller
add submodule; taskapp-cms
Merge branch 'feature/settingModelFeat' of https://github.com/note109/taskapp-api into feature/settingModelFeat

Conflicts:
	app/models/setting.rb
	spec/factories/settings.rb
settings_controller 記述
fix spec/factories/setting
add settings route
Settings の Create Read Delete 実装
settingModel編集機能追加
setting model 作成終了
Merge branch 'feature/settingModelFeat' into develop

settingModelFeat 終了