fix installation issues

setup.py

@@ -1,10 +1,11 @@
+import codecs
+import os
+import re
 from setuptools import setup
 import sys
 
 cmdclass = {}
 
-from tarantool_queue import __version__
-
 try:
     from setuptools import setup
 except ImportError:
@@ -16,10 +17,26 @@
 except ImportError:
     pass
 
+
+def read(*parts):
+    filename = os.path.join(os.path.dirname(__file__), *parts)
+    with codecs.open(filename, encoding='utf-8') as fp:
+        return fp.read()
+
+
+def find_version(*file_paths):
+    version_file = read(*file_paths)
+    version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
+                              version_file, re.M)
+    if version_match:
+        return version_match.group(1)
+    raise RuntimeError("Unable to find version string.")
+
+
 setup(name='tarantool-queue',
-      version=__version__,
+      version=find_version('tarantool_queue', '__init__.py'),
       description='Python bindings for Tarantool queue script (http://github.com/tarantool/queue)',
-      long_description=open('README.rst').read(),
+      long_description=read('README.rst'),
       author='Eugine Blikh',
       author_email='bigbes@gmail.com',
       maintainer='Eugine Blikh',

tarantool_queue/__init__.py

@@ -1,4 +1,4 @@
-__version__ = "0.1.1"
+__version__ = "0.1.2"
 
 from tarantool_queue import Task, Tube, Queue
 __all__ = [Task, Tube, Queue, __version__]