spm

Add GPL header to makefile

diff --git a/Makefile b/Makefile
@@ -1,4 +1,20 @@
-VERSION   = 1.2
+# Copyright (C) 2013-2015 Sören Tempel
+#
+# This program 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/>.
+
+# Current tpm release version.
+VERSION = 1.2
 
 PREFIX    ?= /usr/local
 MANPREFIX ?= $(PREFIX)/share/man