Add Spot Crime sensor documentation (#4685)

* Create sensor.spotcrime.markdown

Docs for the Spot Crime sensor

* Update sensor.spotcrime.markdown

source/_components/sensor.spotcrime.markdown

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+---
+layout: page
+title: "Spot Crime"
+description: "Instructions on how to integrate spotcrime.com into Home Assistant."
+date: 2018-02-16 9:30
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Sensor
+logo: spotcrime.png
+ha_release: 0.64
+ha_iot_class: "Cloud Polling"
+---
+
+The `spotcrime` sensor allows one to track reported incidents occurring in a given area. Incidents include anything reported to [Spot Crime](http://spotcrime.com). Your regional emergency services may or may not report data. The sensor defaults to counting incidents within one day, but can be customized via configuration.yaml.
+
+## Configuration
+
+To enable this sensor, add the following lines to your `configuration.yaml`. Your `radius` should be of sufficient size to capture incidents in your area. 0.01 = 1 mile.
+
+```yaml
+sensor:
+  - platform: spotcrime
+    name: <any name>
+    radius: <your radius>
+    days: <your days>
+```
+
+Configuration options for the Crime Reports Sensor:
+
+- **name** (*Required*): Name the sensor whatever you want.
+- **radius** (*Required*): Radius in meters.
+- **days** (*Optional*): Defaults to 1 day.
+- **latitude** (*Optional*): Defaults to your home zone latitude.
+- **longitude** (*Optional*): Defaults to your home zone longitude.
+- **include** (*Optional*): List of incident types to include.
+- **exclude** (*Optional*): List of incident types to exclude.
+
+
+## Notes
+
+### Incident Types
+
+You can explicitly include or exclude incident types. Specifying `include`s restricts the incidents to those types. Specifying `exclude`s will return all incident types except those specified.
+
+These incident types are available:
+
+- Arrest
+- Arson
+- Assault
+- Burglary
+- Robbery
+- Shooting
+- Theft
+- Vandalism
+- Other
+
+### Events
+
+The `crimealerts` sensor fires a `crimealerts_incident` event when a new incident is detected, including the type, time, and location of the incident.