Fix #62 (add LICENSE in source dir)

Author: cowtowncoder

src/main/resources/META-INF/LICENSE

@@ -0,0 +1,8 @@
+This copy of Jackson JSON processor databind module is licensed under the
+Apache (Software) License, version 2.0 ("the License").
+See the License for details about distribution rights, and the
+specific rights regarding derivate works.
+
+You may obtain a copy of the License at:
+
+http://www.apache.org/licenses/LICENSE-2.0