Add docs for Flu Near You (#7345)

* Add docs for Flu Near You

* Small update

* ✏️ Typo fix

* ⬆️ ha_release 0.83

source/_components/sensor.flunearyou.markdown

@@ -0,0 +1,64 @@
+---
+layout: page
+title: "Flu Near You"
+description: "Instructions on how to use Flu Near You data within Home Assistant"
+date: 2018-11-02 21:05
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: flunearyou.jpg
+ha_category: Health
+ha_release: 0.83
+ha_iot_class: "Cloud Polling"
+---
+
+The `flunearyou` sensor platform allows users in the United States and its
+territories to get information regarding reported flu symptoms from Flu Near
+You. The platform can return user-reported information as well reports from the
+Center for Disease Control (CDC).
+
+## {% linkable_title Configuration %}
+
+To enable the platform, add the following lines to your `configuration.yaml`
+file:
+
+```yaml
+sensor:
+  - platform: flunearyou
+```
+
+{% configuration %}
+monitored_conditions:
+  description: The sensor categories to display.
+  required: false
+  type: list
+  default: ['cdc_report', 'user_report']
+latitude:
+  description: The latitude of the location to monitor.
+  required: optional
+  type: string
+  default: The latitude defined under the `homeassistant` key in `configuration.yaml`.
+longitude:
+  description: The longitude of the location to monitor.
+  required: optional
+  type: string
+  default: The longitude defined under the `homeassistant` key in `configuration.yaml`.
+{% endconfiguration %}
+
+## {% linkable_title Sensor Types %}
+
+### User Report
+
+* Number of reported cases of [Avian Flu](https://www.cdc.gov/flu/avianflu/index.htm) symptoms
+* Number of reported cases of [Dengue](https://www.cdc.gov/dengue/index.html) symptoms
+* Number of reported cases of [Flu](https://www.cdc.gov/flu/) symptoms
+* Number of reported cases of [Flu-like](https://en.wikipedia.org/wiki/Influenza-like_illness) symptoms
+* Number of reported cases of [Leptospirosis](https://www.cdc.gov/leptospirosis/index.html) symptoms
+* Total number of reported cases with symptoms
+* Number of reported cases with no symptoms
+
+### CDC Report
+
+* Current CDC level for the state
+* Current CDC "Level 2" for the state