Generate version from git

Fixes #3

setup.py

@@ -3,8 +3,17 @@ from setuptools import setup, find_packages
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
+try:
+    import ucloud.version
+    version = ucloud.version.VERSION
+except:
+    import subprocess
+    c = subprocess.run(["git", "describe"], capture_output=True)
+    version = c.stdout.decode("utf-8")
+
+
 setup(name='ucloud',
-      version='0.0.1',
+      version=version,
       description='All ucloud server components.',
       url='https://code.ungleich.ch/ucloud/ucloud',
       long_description=long_description,