add documentation library (YARD)
Merge pull request #6 from Mura-Mi/add-yard-gem

add documentation library (YARD)
Check if the errors exist.
Add LinkCell
Add selectize.js.
Stop propagation when showing the dialog.
Adjust styles for Selectize.
Add editor for selectize.
Add username to Users and enable to login with username or email.
Fix permission to Users.
SelectizeEditor now applies its value to the model.
Improve method name.
Add Server API for Users.
Add client API for Users.
Adjust styles.
Adapt naming convention to Server API.
Enable to select owner from remote data source.
Remove helpers.
Adjust padding.
Add Pageable concern.