Have only one source of truth for version

README.md

@@ -1,4 +1,6 @@
-# waybackpack `v0.6.1`
+# waybackpack
+
+[![Version](https://img.shields.io/pypi/v/waybackpack.svg)](https://pypi.python.org/pypi/waybackpack) [![Support Python versions](https://img.shields.io/pypi/pyversions/waybackpack.svg)](https://pypi.python.org/pypi/waybackpack)
 
 Waybackpack is a command-line tool that lets you download the entire Wayback Machine archive for a given URL.
 

setup.py

@@ -2,7 +2,9 @@
 from setuptools import setup, find_packages
 import subprocess
 
-version = "0.6.1"
+version = {}
+with open("waybackpack/version.py") as fp:
+    exec(fp.read(), version)
 
 base_reqs = [
     "requests"
@@ -32,7 +34,7 @@
     author_email="[email protected]",
     url="https://github.com/jsvine/waybackpack",
     license="MIT",
-    version=version,
+    version=version["__version__"],
     packages=find_packages(exclude=["test",]),
     tests_require=[ "pytest", "pytest-coverage" ] + base_reqs,
     extras_require = {