Move version string to ryu/__init__.py

Export version string to other components in the sane way.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

ryu/__init__.py

@@ -0,0 +1,18 @@
+# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+version_info = (0, 2)
+version = '.'.join(map(str, version_info))

setup.py

@@ -20,6 +20,8 @@ import sys
 from setuptools import find_packages
 from setuptools import setup
 
+from ryu import version
+
 doing_bdist = any(arg.startswith('bdist') for arg in sys.argv[1:])
 
 long_description = open('README.rst').read() + '\n\n'
@@ -38,7 +40,7 @@ classifiers = [
     ]
 
 setup(name='ryu',
-      version='0.2',
+      version=version,
       description=("Ryu Network Operating System"),
       long_description=long_description,
       classifiers=classifiers,