Add license file

Author: killerwife

License.mdown

@@ -0,0 +1,28 @@
+LEGAL NOTICE
+------------
+
+**TBC DB** is released under the GPL v3.
+
+The terms and conditions of this license are described below:
+
+    TBC DB 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 <http://www.gnu.org/licenses/>.
+
+This file (`LICENSE.mdown`) **must** be a part of any redistributable packages
+made from this software.  No licenses should be removed from this software if
+you are making redistributable copies.
+
+
+CONTENT COPYRIGHT
+-----------------
+Game content is Copyright © 2004-2017 Blizzard Entertainment