make more clear the doc how to install.

61beff2f · Frederic Bastien · 448322bc · 61beff2f
--- a/doc/index.txt
+++ b/doc/index.txt
@@ -32,6 +32,7 @@ Documentation

 Roughly in order of what you'll want to check out:

+* :ref:`install` -- How to install Theano.
 * :ref:`introduction` -- What is Theano?
 * :ref:`tutorial` -- Learn the basics.
 * :ref:`libdoc` -- Theano's functionality, module by module.