Change introduction card to use persistent notification (#10265)

* Change introduction card to use persistent notification

* Lint

homeassistant/components/introduction.py

@@ -4,6 +4,7 @@ Component that will help guide the user taking its first steps.
 For more details about this component, please refer to the documentation at
 https://home-assistant.io/components/introduction/
 """
+import asyncio
 import logging
 
 import voluptuous as vol
@@ -15,7 +16,8 @@ CONFIG_SCHEMA = vol.Schema({
 }, extra=vol.ALLOW_EXTRA)
 
 
-def setup(hass, config=None):
+@asyncio.coroutine
+def async_setup(hass, config=None):
     """Set up the introduction component."""
     log = logging.getLogger(__name__)
     log.info("""
@@ -46,4 +48,16 @@ def setup(hass, config=None):
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     """)
 
+    hass.components.persistent_notification.async_create("""
+Here are some resources to get started:
+
+ - [Configuring Home Assistant](https://home-assistant.io/getting-started/configuration/)
+ - [Available components](https://home-assistant.io/components/)
+ - [Troubleshooting your configuration](https://home-assistant.io/docs/configuration/troubleshooting/)
+ - [Getting help](https://home-assistant.io/help/)
+
+To not see this card popup in the future, edit your config in
+`configuration.yaml` and disable the `introduction` component.
+""", 'Welcome Home!')  # noqa
+
     return True