Added license and a basic README.

src/api/model/entries.py

@@ -1,3 +1,19 @@
+"""
+    This file is part of Accountant.
+
+    Accountant 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.
+
+    Foobar 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 Accountant.  If not, see <http://www.gnu.org/licenses/>.
+"""
 from app import app
 from app import db