add version file

powerline/__init__.py

@@ -14,7 +14,7 @@ from powerline.config import DEFAULT_SYSTEM_CONFIG_DIR
 from powerline.lib.dict import mergedicts
 from powerline.lib.encoding import get_preferred_output_encoding
 from powerline.lib.path import join
-
+from powerline.version import __version__
 
 class NotInterceptedError(BaseException):
 	pass

powerline/version.py

@@ -0,0 +1,15 @@
+# vim:fileencoding=utf-8:noet
+from __future__ import (unicode_literals, division, absolute_import, print_function)
+
+import subprocess
+from traceback import print_exc
+
+__version__ = "2.8.1"
+
+def get_version():
+	try:
+		return __version__ + '.dev9999+git.' + str(subprocess.check_output(['git', 'rev-parse', 'HEAD']).strip())
+	except Exception:
+		print_exc()
+		return __version__
+

setup.py

@@ -4,13 +4,12 @@ from __future__ import (unicode_literals, division, absolute_import, print_funct
 
 import os
 import sys
-import subprocess
 import logging
 import shlex
 
-from traceback import print_exc
 from setuptools import setup, find_packages
 
+from powerline.version import get_version
 
 CURRENT_DIR = os.path.abspath(os.path.dirname(__file__))
 try:
@@ -57,17 +56,6 @@ except Exception as e:
 else:
 	can_use_scripts = False
 
-
-def get_version():
-	base_version = '2.8'
-	base_version += '.dev9999'
-	try:
-		return base_version + '+git.' + str(subprocess.check_output(['git', 'rev-parse', 'HEAD']).strip())
-	except Exception:
-		print_exc()
-		return base_version
-
-
 setup(
 	name='powerline-status',
 	version=get_version(),