Fix versioning depending on nose.

Previously versioning depended on nose which broke setup.py if nose
was not already installed. Break version into its own module so that
it is not dependent on nose.

htmloutput/htmloutput.py

@@ -42,7 +42,8 @@ import traceback
 from nose.plugins import Plugin
 from xml.sax import saxutils
 
-__version__ = "0.0.1"
+import version
+__version__ = version.__version__
 
 class TemplateData(object):
     """

htmloutput/version.py

@@ -0,0 +1 @@
+__version__ = '0.0.1'

setup.py

@@ -1,9 +1,9 @@
-import htmloutput.htmloutput
+import htmloutput.version
 import setuptools
 
 setuptools.setup(
     name="nosehtmloutput",
-    version=htmloutput.htmloutput.__version__,
+    version=htmloutput.version.__version__,
     author='Hewlett-Packard Development Company, L.P.',
     description="Nose plugin to produce test results in html.",
     license="Apache License, Version 2.0",