Remove extraneous text from license file

In order to be recognized by GitHub's automatic license detection system, the license file must contain only the exact
license text, which can be sourced from choosealicense.com. Please do not modify this file in any way.

LICENSE

@@ -1,17 +1,3 @@
-This file includes licensing information for Arduino GitHub Actions.
-
-Copyright (c) 2019 ARDUINO SA
-
-The software is released under the GNU General Public License, which covers the main body
-of the [insert app name] code. The terms of this license can be found at:
-https://www.gnu.org/licenses/gpl-3.0.en.html
-
-You can be released from the requirements of the above licenses by purchasing
-a commercial license. Buying such a license is mandatory if you want to modify or
-otherwise use the software for commercial activities involving the Arduino
-software without disclosing the source code of your own applications. To purchase
-a commercial license, send an email to [email protected]
-
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 

__tests__/main.test.ts

@@ -1,3 +1,15 @@
+// Copyright (c) 2019 ARDUINO SA
+//
+// The software is released under the GNU General Public License, which covers the main body
+// of the arduino/setup-taskfile code. The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to modify or
+// otherwise use the software for commercial activities involving the Arduino
+// software without disclosing the source code of your own applications. To purchase
+// a commercial license, send an email to [email protected]
+
 import io = require("@actions/io");
 import path = require("path");
 import os = require("os");

src/installer.ts

@@ -1,3 +1,15 @@
+// Copyright (c) 2019 ARDUINO SA
+//
+// The software is released under the GNU General Public License, which covers the main body
+// of the arduino/setup-taskfile code. The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to modify or
+// otherwise use the software for commercial activities involving the Arduino
+// software without disclosing the source code of your own applications. To purchase
+// a commercial license, send an email to [email protected]
+
 // Load tempDirectory before it gets wiped by tool-cache
 let tempDirectory = process.env["RUNNER_TEMP"] || "";
 

src/main.ts

@@ -1,3 +1,15 @@
+// Copyright (c) 2019 ARDUINO SA
+//
+// The software is released under the GNU General Public License, which covers the main body
+// of the arduino/setup-taskfile code. The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to modify or
+// otherwise use the software for commercial activities involving the Arduino
+// software without disclosing the source code of your own applications. To purchase
+// a commercial license, send an email to [email protected]
+
 import * as core from "@actions/core";
 import * as installer from "./installer";