Add ClickSend notify service page. (#2868)

source/_components/notify.clicksend.markdown

@@ -0,0 +1,41 @@
+---
+layout: page
+title: "ClickSend"
+description: "Instructions on how to add ClickSend notifications to Home Assistant."
+date: 2017-06-22 00:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: clicksend.png
+ha_category: Notifications
+ha_release: 0.48
+---
+
+
+The `clicksend` platform uses [ClickSend](https://clicksend.com) to deliver notifications from Home Assistant.
+
+### Get your ClickSend API Credentials
+Go to your [ClickSend Dashboard](https://dashboard.clicksend.com) section and create your new project. After creating your project, you should now be able to obtain your `username` and `api_key`.
+
+### Configuration
+To add ClickSend to your installation, add the following to your Home Assistant `configuration.yaml` file:
+
+```yaml
+notify:
+  - platform: clicksend
+    name: ClickSend
+    username: CLICKSEND_USERNAME
+    api_key: CLICKSEND_API_KEY
+    recipient: PHONE_NO
+```
+
+Configuration variables:
+
+* **name** (Optional): Setting the optional parameter name allows multiple notifiers to be created. The default value is `ClickSend`. The notifier will bind to the service notify.NOTIFIER_NAME.
+* **username** (Required): Your `Username`.
+* **api_key** (Required): Your `API Key`.
+* **recipient** (Required): Your phone no. This is where you want to send your notification SMS messages. eg: `09171234567`
+
+
+To use notifications, please see the [getting started with automation page](https://home-assistant.io/getting-started/automation/).