Added theano.clone in the doc.

1f9d7ba3 · Frederic Bastien · 5a34781f · 1f9d7ba3
--- a/doc/library/index.txt
+++ b/doc/library/index.txt
@@ -47,3 +47,4 @@ There are also some top-level imports that you might find more convenient:

    Works like :func:`tensor.dot` for both sparse and dense matrix products

+.. autofunction:: theano.clone