Added versioning borrowed fron GNU Radio to gr-gsm
diff --git a/swig/constants.i b/swig/constants.i
new file mode 100644
index 0000000..1efca59
--- /dev/null
+++ b/swig/constants.i
@@ -0,0 +1,36 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2009,2013 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+namespace gr {
+ namespace gsm{
+ %rename(build_date) build_date;
+ %rename(version) version;
+ %rename(version_info) version_info;
+
+ const std::string build_date();
+ const std::string version();
+ const std::string major_version();
+ const std::string api_version();
+ const std::string minor_version();
+ } /* namespace gsm */
+} /* namespace gr */