Add LIFX node

lifx/LICENSE

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+MIT License
+
+Copyright (c) 2018 Losant
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

lifx/README.md

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+# LIFX
+
+Control [LIFX](https://www.lifx.com/) devices over the internet using the [LIFX HTTP API](https://api.developer.lifx.com/docs/).
+
+## Input Configuration
+
+* `LIFX App Token`: All requests to the LIFX API require an app token. You can generate an access token in your [account settings](https://cloud.lifx.com/settings). For more details, please refer to LIFX's [Authentication Documentation](https://api.developer.lifx.com/docs/authentication).
+* `Action`: This node supports three API Actions: 
+  * [List Lights](https://api.developer.lifx.com/docs/list-lights) - Filter the lights using [selectors](https://api.developer.lifx.com/docs/selectors).
+  * [Set State](https://api.developer.lifx.com/docs/set-state) - Sets the state of the lights within the selector.
+  * [Toggle](https://api.developer.lifx.com/docs/toggle-power) - Turn off lights if any of them are on, or turn them on if they are all off. 
+* `Selector`: [Lifx selectors](https://api.developer.lifx.com/docs/selectors) are an identifier for addressing one or many lights belonging to the authenticated account.
+* `Body`: The [Set State](https://api.developer.lifx.com/docs/set-state) and [Toggle](https://api.developer.lifx.com/docs/toggle-power) actions support the ability to include a body with the request. See their respective documentation to see what to include in the body.
+
+## Output Result
+The result of all successful requests will include a `body` property. The `body` object contains the response data.
+
+```json
+{
+  "body":{
+    "results": [
+        {
+            "id": "f043d559273c",
+            "status": "ok",
+            "label": "LIFX Light"
+        }
+    ]
+  }
+}
+```
+
+If the request to LIFX's API fails, the `body` property will contain an `error` object with additional details.
+
+```json
+{
+  "body":{
+    "error": "Token required"
+  }
+}
+```
+
+If the HTTP request fails, the `body` property will contain an `error` object with additional details.
+
+```json
+{
+  "error":{
+    "message": "Cannot resolve host: api.lifx.com",
+  }
+}
+```
+
+## Version History
+
+| Version | Date | Description |
+| ------- | -------- | ---------------- |
+| v1.0.0  | 9/18/2018 | Initial release. |
+
+---
+
+This node is developed and maintained by [Losant](https://www.losant.com). Please place issues, comments, or questions on the [Losant Forums](https://forums.losant.com).
+
+Copyright © 2018 Losant IoT, Inc
+
+https://www.losant.com
+