cjdns: add copyright notice to Makefile

Signed-off-by: Lars Gierth <larsg@systemli.org>

cjdns/Makefile

@@ -1,3 +1,19 @@
+#
+# Copyright (C) 2014,2015 Hyperboria.net
+#
+# You may redistribute this program 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/>.
+#
+
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=cjdns