Update copyright license to GPL3+.

1 files changed, 13 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index b8ce1fa..f39d72d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,17 @@
-all:
+# 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/>.
 
-install:
-	
+all:
 
 clean:
 	rm -f *.py[co] */*.py[co] .coverage