[rb] update copyright years in README
@@ -16,7 +16,7 @@ and has been tested to work on MRI (2.0 through 2.2),
## License
-Copyright 2009-2016 Software Freedom Conservancy
+Copyright 2009-2017 Software Freedom Conservancy
Licensed to the Software Freedom Conservancy (SFC) under one
or more contributor license agreements. See the NOTICE file
