Add printing of doc string to ``help`` target

Updated ``target`` decorator to forward the doc-string of the decorated
method to the returned wrapper method.

xnt.xenant, when printing targets, can access the forwarded doc-string and
print it as a description of the target

1 files changed, 1 insertions, 0 deletions

diff --git a/xnt/__init__.py b/xnt/__init__.py
index 37abe45..70234a0 100644
--- a/xnt/__init__.py
+++ b/xnt/__init__.py
@@ -6,4 +6,5 @@ def target(fn):
         print(fn.__name__ + ":")
         return fn()
     wrap.decorator = "target"
+    wrap.__doc__ = fn.__doc__
     return wrap