Add license (GNU GPLv3+)

1 files changed, 13 insertions, 0 deletions

diff --git a/github-apple-option-p-to-preview.user.js b/github-apple-option-p-to-preview.user.js
index c6eac52..6442a46 100644
--- a/github-apple-option-p-to-preview.user.js
+++ b/github-apple-option-p-to-preview.user.js
@@ -7,6 +7,19 @@
 // @grant       none
 // ==/UserScript==
 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
 var KEY_CODE_P = 80;