11 files changed, 814 insertions, 677 deletions

diff --git a/build.gradle b/build.gradle
index c7a64f4..f1476db 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,3 +1,21 @@
+/*
+ * pandoc-filter-plantuml, a Pandoc AST filter rendering PlantUML diagrams
+ * Copyright (C) 2018 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 group 'org.pacien.pandoc.filter.plantuml'
 version '1.0-SNAPSHOT'
 
diff --git a/license.md b/license.md
new file mode 100644
index 0000000..cba6f6a
--- /dev/null
+++ b/license.md
@@ -0,0 +1,660 @@
+### GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this
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