Add Paper namespace to docs.

Author: mbogosian

docs/moduledoc.rst

@@ -32,14 +32,22 @@ SDK Documentation
    :show-inheritance:
    :undoc-members:
 
-:mod:`dropbox.sharing` -- Sharing
+:mod:`dropbox.paper` -- Paper
 ============================================
-.. automodule:: dropbox.sharing
+.. automodule:: dropbox.paper
    :members:
    :show-inheritance:
    :special-members: __init__
    :undoc-members:
 
+:mod:`dropbox.sharing` -- Sharing
+============================================
+.. automodule:: dropbox.sharing
+  :members:
+  :show-inheritance:
+  :special-members: __init__
+  :undoc-members:
+
 :mod:`dropbox.team` -- Team
 ============================================
 .. automodule:: dropbox.team
@@ -63,4 +71,3 @@ SDK Documentation
    :show-inheritance:
    :special-members: __init__
    :undoc-members:
-