add markdown editor

app/javascript/application.js

@@ -40,6 +40,7 @@ import DashboardDropzone from './elements/dashboard_dropzone'
 import RequiredCheckboxGroup from './elements/required_checkbox_group'
 import PageContainer from './elements/page_container'
 import EmailEditor from './elements/email_editor'
+import MarkdownEditor from './elements/markdown_editor'
 import MountOnClick from './elements/mount_on_click'
 import RemoveOnEvent from './elements/remove_on_event'
 import ScrollTo from './elements/scroll_to'
@@ -131,6 +132,7 @@ safeRegisterElement('check-on-click', CheckOnClick)
 safeRegisterElement('required-checkbox-group', RequiredCheckboxGroup)
 safeRegisterElement('page-container', PageContainer)
 safeRegisterElement('email-editor', EmailEditor)
+safeRegisterElement('markdown-editor', MarkdownEditor)
 safeRegisterElement('mount-on-click', MountOnClick)
 safeRegisterElement('remove-on-event', RemoveOnEvent)
 safeRegisterElement('scroll-to', ScrollTo)