Add REST notify component

.coveragerc

@@ -106,6 +106,7 @@ omit =
     homeassistant/components/notify/pushbullet.py
     homeassistant/components/notify/pushetta.py
     homeassistant/components/notify/pushover.py
+    homeassistant/components/notify/rest.py
     homeassistant/components/notify/slack.py
     homeassistant/components/notify/smtp.py
     homeassistant/components/notify/syslog.py

homeassistant/components/notify/rest.py

@@ -0,0 +1,63 @@
+"""
+homeassistant.components.notify.rest
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+REST platform for notify component.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/notify.rest/
+"""
+import logging
+import requests
+
+from homeassistant.helpers import validate_config
+from homeassistant.components.notify import (
+    DOMAIN, BaseNotificationService)
+
+_LOGGER = logging.getLogger(__name__)
+
+DEFAULT_METHOD = 'GET'
+DEFAULT_PARAM_NAME = 'message'
+
+
+def get_service(hass, config):
+    """ Get the REST notification service. """
+
+    if not validate_config({DOMAIN: config},
+                           {DOMAIN: ['resource', ]},
+                           _LOGGER):
+        return None
+
+    method = config.get('method', DEFAULT_METHOD)
+    param_name = config.get('param_name', DEFAULT_PARAM_NAME)
+
+    return RestNotificationService(config['resource'], method, param_name)
+
+
+# pylint: disable=too-few-public-methods
+class RestNotificationService(BaseNotificationService):
+    """ Implements notification service for REST. """
+
+    def __init__(self, resource, method=DEFAULT_METHOD,
+                 param_name=DEFAULT_PARAM_NAME):
+        self._resource = resource
+        self._method = method
+        self.param_name = param_name
+
+    def send_message(self, message="", **kwargs):
+        """ Send a message to a user. """
+
+        data = {
+            self.param_name: message
+        }
+
+        if self._method.upper() == 'GET':
+            response = requests.get(self._resource, params=data)
+        elif self._method.upper() == 'POST':
+            response = requests.post(self._resource, data=data)
+        elif self._method.upper() == 'JSON':
+            response = requests.post(self._resource, json=data)
+
+        if (response.status_code != requests.codes.ok and
+                response.status_code != requests.codes.created):
+            _LOGGER.exception(
+                "Error sending message. Response: %s", response.reason)