Added Currencylayer markdown

source/_components/sensor.currencylayer.markdown

@@ -0,0 +1,38 @@
+---
+layout: page
+title: "Currencylayer"
+description: "Instructions on integrating exchange rates from https://currencylayer.com/ within Home Assistant."
+date: 2016-10-26 10:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: Finance
+logo: currencylayer.png
+ha_iot_class: "Cloud Polling"
+ha_release: 0.32
+---
+
+
+The `currencylayer` sensor will show you the current exchange rate from [Currencylayer](https://currencylayer.com/) that provides realtime exchange rates for [170 currencies](https://currencylayer.com/currencies). The free account is limited to only USD as a base currency, allows 1000 requests per month, and updates every hour.
+
+Obtain your API key [here](https://currencylayer.com/product)
+
+To enable this sensor, add the following lines to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: currencylayer
+    api_key: YOUR_API_KEY
+    base: USD
+    quote:
+      - EUR
+      - INR
+```
+
+Configuration variables:
+
+- **api_key** (*Required*): API Key from [Currencylayer](https://currencylayer.com/).
+- **base** (*Optional*): The symbol of the base currency. Defaults to USD.
+- **quote** (*Required*): The symbol(s) of the quote or target currencies.