Add native ESPHome API (#265)

* Esphomeapi

* Updates

* Remove MQTT from wizard

* Add protobuf to requirements

* Fix

* API Client updates

* Dump config on API connect

* Old WiFi config migration

* Home Assistant state import

* Lint

esphomeyaml/components/interval.py

@@ -0,0 +1,23 @@
+import voluptuous as vol
+
+from esphomeyaml import automation
+import esphomeyaml.config_validation as cv
+from esphomeyaml.const import CONF_ID
+from esphomeyaml.cpp_generator import Pvariable
+from esphomeyaml.cpp_helpers import setup_component
+from esphomeyaml.cpp_types import App, NoArg, PollingComponent, Trigger, esphomelib_ns
+
+IntervalTrigger = esphomelib_ns.class_('IntervalTrigger', Trigger.template(NoArg), PollingComponent)
+
+CONFIG_SCHEMA = automation.validate_automation(vol.Schema({
+    vol.Required(CONF_ID): cv.declare_variable_id(IntervalTrigger),
+}).extend(cv.COMPONENT_SCHEMA.schema))
+
+
+def to_code(config):
+    for conf in config:
+        rhs = App.register_component(IntervalTrigger.new())
+        trigger = Pvariable(conf[CONF_ID], rhs)
+        setup_component(trigger, conf)
+
+        automation.build_automation(trigger, NoArg, conf)