Add 0.19 blog post

source/_components/sensor.fitbit.markdown

@@ -0,0 +1,19 @@
+---
+layout: page
+title: "Fitbit"
+description: "Instructions how to integrate Fitbit devices within Home Assistant."
+date: 2015-07-11 0:15
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: 
+ha_category: Sensor
+ha_iot_class: "Cloud Polling"
+ha_release: 0.19
+---
+
+```yaml
+sensor:
+  platform: fitbit
+```