Added new Clickatell SMS messaging Notify Platform (#9775)

* Added new Clickatell SMS messaging Notify Platform

* Added new Clickatell SMS platform with layout corrections

* Added new Clickatell platform with additional  layout corrections

* Added new Clickatell platform with exception handling removed

* Added new Clickatell platform with poor reference removed

* Reversed changes to dev_docker file

* Minor changes

homeassistant/components/notify/clickatell.py

@@ -0,0 +1,52 @@
+"""
+Clickatell platform for notify component.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/notify.clickatell/
+"""
+import logging
+
+import requests
+import voluptuous as vol
+
+import homeassistant.helpers.config_validation as cv
+from homeassistant.const import (CONF_API_KEY, CONF_RECIPIENT)
+from homeassistant.components.notify import (
+    PLATFORM_SCHEMA, BaseNotificationService)
+
+_LOGGER = logging.getLogger(__name__)
+
+DEFAULT_NAME = 'clickatell'
+
+BASE_API_URL = 'https://platform.clickatell.com/messages/http/send'
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
+    vol.Required(CONF_API_KEY): cv.string,
+    vol.Required(CONF_RECIPIENT): cv.string,
+})
+
+
+def get_service(hass, config, discovery_info=None):
+    """Get the Clickatell notification service."""
+    return ClickatellNotificationService(config)
+
+
+class ClickatellNotificationService(BaseNotificationService):
+    """Implementation of a notification service for the Clickatell service."""
+
+    def __init__(self, config):
+        """Initialize the service."""
+        self.api_key = config.get(CONF_API_KEY)
+        self.recipient = config.get(CONF_RECIPIENT)
+
+    def send_message(self, message="", **kwargs):
+        """Send a message to a user."""
+        data = {
+            'apiKey': self.api_key,
+            'to': self.recipient,
+            'content': message,
+        }
+
+        resp = requests.get(BASE_API_URL, params=data, timeout=5)
+        if (resp.status_code != 200) or (resp.status_code != 201):
+            _LOGGER.error("Error %s : %s", resp.status_code, resp.text)