Merge pull request #4 from fermiPy/dmcat-dev

Pulling in changes from dmcat-dev.  Code cleanup and documentation.

Author: eacharles

dmsky/_version.py

@@ -155,7 +155,7 @@ def git_versions_from_keywords(keywords, tag_prefix, verbose):
         # "stabilization", as well as "HEAD" and "master".
         tags = set([r for r in refs if re.search(r'\d', r)])
         if verbose:
-            print("discarding '%s', no digits" % ",".join(refs-tags))
+            print("discarding '%s', no digits" % ",".join(refs - tags))
     if verbose:
         print("likely tags: %s" % ",".join(sorted(tags)))
     for ref in sorted(tags):