Add license (GNU GPLv3+)

1 files changed, 19 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index f985750..6bd4e70 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,22 @@
+// Copyright (c) 2021  Teddy Wing
+//
+// This file is part of PDF Form Replace Font.
+//
+// PDF Form Replace Font 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.
+//
+// PDF Form Replace Font 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 PDF Form Replace Font. If not, see
+// <https://www.gnu.org/licenses/>.
+
+
 use anyhow::{self, Context};
 use exitcode;
 use getopts::Options;