adding toolbox and env to docs

doc/library/gof/env.txt

+
+.. _libdoc_gof_env:
+
+================================================
+:mod:`env` -- Graph Container [doc TODO]
+================================================
+
+.. module:: env
+   :platform: Unix, Windows
+   :synopsis: Theano Internals
+.. moduleauthor:: LISA
+
+
+Guide
+=====
+
+Env
+---
+
+.. _libdoc_gof_envfeature:
+
+Env Features
+-------------
+
+.. _libdoc_gof_envfeaturelist:
+
+Env Feature List
+^^^^^^^^^^^^^^^^
+* ReplaceValidate
+* DestroyHandler
+
+Reference
+=========
+
+.. class:: Env
+
+    ***TODO***
+

doc/library/gof/toolbox.txt

+.. _libdoc_gof_toolbox:
+
+================================================
+:mod:`toolbox` -- [doc TODO]
+================================================
+
+.. module:: toolbox
+   :platform: Unix, Windows
+   :synopsis: Theano Internals
+.. moduleauthor:: LISA
+
+Guide
+=====
+
+.. class:: Bookkeeper(object)
+
+.. class:: History(object)
+
+    .. method:: revert(env, checkpoint)
+        Reverts the graph to whatever it was at the provided
+        checkpoint (undoes all replacements).  A checkpoint at any
+        given time can be obtained using self.checkpoint().
+
+.. class:: Validator(object)
+
+.. class:: ReplaceValidate(History, Validator)
+
+    .. method:: replace_validate(env, var, new_var, reason=None)
+
+.. class:: NodeFinder(Bookkeeper)
+
+.. class:: PrintListener(object)
+
+