Fix on fix of install documentation

docs/source/install/install.rst

@@ -174,8 +174,7 b' step by:'
     $ python setupegg.py develop
 
 This creates links in the right places and installs the command line script to
-the appropriate places. You also have to copy `git hooks <https://github.com/ipython/ipython/tree/master/git-hooks>`_
-to your ``./git`` directory to ensure that your submodules are up to date on each pull.
+the appropriate places. 
 
 Then, if you want to update your IPython at any time,
 just do:
@@ -184,6 +183,22 b' just do:'
 
     $ git pull
 
+IPython now uses git submodules to ship its javascript dependencies. If you run 
+IPython from git master, you may need to update submodules once in a while with:
+
+.. code-block:: bash
+
+    $ git submodule update
+
+or
+
+.. code-block:: bash
+
+    $ python setup.py submodule
+
+Another option is to copy `git hooks <https://github.com/ipython/ipython/tree/master/git-hooks>`_
+to your ``./git`` directory to ensure that your submodules are up to date on each pull.
+
 
 Basic optional dependencies
 ===========================