Move package version definition from setup.py to static_precompiler.__version__

Use `python-requests` approach to populate version in `setup.py`

Author: Andrey Fedoseev

setup.py

@@ -1,6 +1,7 @@
 from setuptools import setup, find_packages
 from setuptools.command.test import test as TestCommand
 import os
+import re
 import sys
 
 
@@ -38,10 +39,20 @@ def read(fname):
 README = read('README.rst')
 CHANGES = read('CHANGES.rst')
 
+
+version = ""
+
+with open("static_precompiler/__init__.py") as fd:
+    version = re.search(r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]', fd.read(), re.MULTILINE).group(1)
+
+if not version:
+    raise RuntimeError('Cannot find version information')
+
+
 setup(
     name="django-static-precompiler",
     packages=find_packages(),
-    version="1.1",
+    version=version,
     author="Andrey Fedoseev",
     author_email="andrey.fedoseev@gmail.com",
     url="https://github.com/andreyfedoseev/django-static-precompiler",

static_precompiler/__init__.py

@@ -0,0 +1 @@
+__version__ = "1.1"