Create check_config.markdown

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+---
+layout: page
+title: "Check HomeAssistant config"
+description: "Check HomeAssistant config with a new version"
+date: 2017-04-30 13:28
+sidebar: true
+comments: false
+sharing: true
+footer: true
+---
+
+Check actual HomeAssistant config with a HomeAssistant version.
+
+```json
+{
+  "version": "latest"
+}
+```
+
+Configuration variables:
+
+- **version** (*Required*): Version of homeassistant they will install from pip.