Improve packaging

Decouple build from runtime deps

Author: dhirschf

ldapauthenticator/__init__.py

@@ -1,4 +1 @@
 from ldapauthenticator.ldapauthenticator import LDAPAuthenticator
-
-
-__version__ = '1.2.0'

setup.py

@@ -1,6 +1,11 @@
 from setuptools import setup
 
-from ldapauthenticator import __version__ as version
+
+version = '1.2.0'
+
+
+with open("./ldapauthenticator/__init__.py", 'a') as f:
+    f.write("__version__ = '{}'".format(version))
 
 
 setup(