Add license headers to pool.py and test_pool.py

Author: 1st1

asyncpg/pool.py

@@ -1,3 +1,10 @@
+# Copyright (C) 2016-present the ayncpg authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of asyncpg and is released under
+# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+
+
 import asyncio
 
 from . import connection

tests/test_pool.py

@@ -1,3 +1,10 @@
+# Copyright (C) 2016-present the ayncpg authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of asyncpg and is released under
+# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+
+
 import asyncio
 import asyncpg