Update config docs.

docs/source/config/ipython.txt

@@ -10,10 +10,11 b' overview <config_overview>` for a more general description of the'
 configuration system and configuration file format.
 
 The default configuration file for the :command:`ipython` command line application
-is :file:`ipython_config.py`.  By setting the attributes in this file, you
-can configure the application.   A sample is provided in
-:mod:`IPython.config.default.ipython_config`.  Simply copy this file to your
-:ref:`IPython directory <ipython_dir>` to start using it.
+is :file:`profile_default/ipython_config.py` in your :ref:`IPython directory
+<ipython_dir>`. By setting the attributes in this file, you can configure the
+application. To create the default config file, run this command::
+
+    $ ipython profile create
 
 Most configuration attributes that this file accepts are associated with classes
 that are subclasses of :class:`~IPython.config.configurable.Configurable`.  
@@ -63,19 +64,8 b' them via :attr:`c.TerminalIPythonApp` and :attr:`c.IPKernelApp` respectively.'
 
 
 :attr:`c.InteractiveShellApp.extensions`
-    A list of strings, each of which is an importable IPython extension. An
-    IPython extension is a regular Python module or package that has a
-    :func:`load_ipython_extension(ip)` method. This method gets called when
-    the extension is loaded with the currently running
-    :class:`~IPython.core.interactiveshell.InteractiveShell` as its only
-    argument. You can put your extensions anywhere they can be imported but we
-    add the :file:`extensions` subdirectory of the ipython directory to
-    ``sys.path`` during extension loading, so you can put them there as well.
-    Extensions are not executed in the user's interactive namespace and they
-    must be pure Python code. Extensions are the recommended way of customizing
-    :command:`ipython`. Extensions can provide an
-    :func:`unload_ipython_extension` that will be called when the extension is
-    unloaded.
+    A list of strings, each of which is an importable IPython extension. See
+    :ref:`extensions_overview` for more details about extensions.
 
 :attr:`c.InteractiveShellApp.exec_lines`
     A list of strings, each of which is Python code that is run in the user's
@@ -116,7 +106,7 b' attributes::'
     # sample ipython_config.py
     c = get_config()
 
-    c.IPythonTerminalApp.display_banner = True
+    c.TerminalIPythonApp.display_banner = True
     c.InteractiveShellApp.log_level = 20
     c.InteractiveShellApp.extensions = [
         'myextension'

docs/source/config/overview.txt

@@ -16,7 +16,10 b' met our requirements.'
 
     If you are upgrading to version 0.11 of IPython, you will need to migrate
     your old :file:`ipythonrc` or :file:`ipy_user_conf.py` configuration files
-    to the new system.  Read on for information on how to do this.
+    to the new system. You may want to read the section on 
+    :ref:`configuring IPython <configuring_ipython>`. There are also some ideas
+    `on the IPython wiki <http://wiki.ipython.org/Cookbook/Moving_config_to_IPython_0.11>`_
+    about this.
 
 The discussion that follows is focused on teaching users how to configure
 IPython to their liking.  Developers who want to know more about how they

docs/source/config/plugins.txt

@@ -8,17 +8,15 b' IPython has a plugin mechanism that allows users to create new and custom'
 runtime components for IPython. Plugins are different from extensions:
 
 * Extensions are used to load plugins.
-* Extensions are a more advanced configuration system that gives you access
+* Plugins are a more advanced configuration system that gives you access
   to the running IPython instance.
-* Plugins add entirely new capabilities to IPython.
 * Plugins are traited and configurable.
 
-At this point, our plugin system is brand new and the documentation is 
-minimal. If you are interested in creating a new plugin, see the following
-files:
+At this point, the documentation of our plugin system is minimal. If you are
+interested in creating a new plugin, see the following files:
 
 * :file:`IPython/extensions/parallelmagic.py`
 * :file:`IPython/extensions/autoreload.py`
-* :file:`IPython/extensions/sympyprinting.py`
 
-As well as our documentation on the configuration system and extensions.
+As well as our documentation on the :ref:`configuration system <config_overview>`
+and :ref:`extensions <extensions_overview>`.