Add missing ColorPreview to import list in README.md (#198)

README.md

@@ -36,7 +36,7 @@ import { Application } from "@hotwired/stimulus"
 const application = Application.start();
 
 // Import and register all TailwindCSS Components or just the ones you need
-import { Alert, Autosave, Dropdown, Modal, Tabs, Popover, Toggle, Slideover } from "tailwindcss-stimulus-components"
+import { Alert, Autosave, ColorPreview, Dropdown, Modal, Tabs, Popover, Toggle, Slideover } from "tailwindcss-stimulus-components"
 application.register('alert', Alert)
 application.register('autosave', Autosave)
 application.register('color-preview', ColorPreview)