Add license (GNU GPLv3+)

1 files changed, 15 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 7e96024..44031b0 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,18 @@
+// Copyright (c) 2021  Teddy Wing
+//
+// 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 <https://www.gnu.org/licenses/>.
+
 use anyhow::{anyhow, Context, Error};
 use mailparse;
 use whatlang::{self, Lang};