fix problem where if you don't have things installed, it'll

fail to install because installing requires things to be installed...
Not pretty to parse out the version, but other packages do it.. and
better than repeating it multiple times..

setup.py

@@ -1,7 +1,15 @@
 #!/usr/bin/env python
 
+def getversion(fname):
+	with open(fname) as fp:
+		v = [ x for x in fp.readlines() if x.startswith('__version__') ]
+		if len(v) != 1:
+			raise ValueError('too many lines start with __version__')
+		return v[0].split("'")[1]
+
 from setuptools import setup
-from ntunnel import __version__
+import os.path
+__version__ = getversion(os.path.join('ntunnel', '__init__.py'))
 
 # Install requirements for git:
 # https://stackoverflow.com/questions/18026980/python-setuptools-how-can-i-list-a-private-repository-under-install-requires