Add Huawei LTE Notify docs (#7934)

* Add Huawei LTE Notify docs

* Use recipient instead of target in config

* Bump HA release to 0.88

source/_components/notify.huawei_lte.markdown

@@ -0,0 +1,46 @@
+---
+layout: page
+title: "Huawei LTE Notify"
+description: "Instructions on how to add Huawei LTE notifications to Home Assistant."
+date: 2018-12-23 17:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: huawei.svg
+ha_category: Notifications
+ha_release: 0.88
+---
+
+The `huawei_lte` platform allows you to use a Huawei LTE router for
+notifications from Home Assistant. The messages will be sent as SMS
+text messages.
+
+This requires you to have set up the
+[Huawei LTE component](/components/huawei_lte/).
+
+```yaml
+# Example configuration.yaml entry
+notify:
+  - platform: huawei_lte
+    recipient: "+15105550123"
+```
+
+{% configuration %}
+recipient:
+  description: The phone number of a default recipient or a list with multiple recipients.
+  required: true
+  type: string, list
+name:
+  description: Setting the optional parameter `name` allows multiple notifiers to be created. The notifier will bind to the service `notify.NOTIFIER_NAME`.
+  required: false
+  default: notify
+  type: string
+url:
+  description: The router to use. Not needed if you only have one.
+  required: false
+  type: url
+{% endconfiguration %}
+
+To use notifications, please see the
+[getting started with automation page](/getting-started/automation/).