Add -c (short for --crunch)

jlinoff · jlinoff · commit d633c783ce9f · 2017-02-03T10:19:03.000-08:00
diff --git a/git2dot.py b/git2dot.py
@@ -1158,7 +1158,7 @@ def gettext(s):
 Default: %(default)s
  ''')
 
-    parser.add_argument('--crunch',
+    parser.add_argument('-c', '--crunch',
                         action='store_true',
                         help='''Crunch branches and tags.
 Crunch branches into a single node and tags into a single.
