README now includes description of make targets

docs/README.rst

@@ -1,14 +1,32 b''
-Current version information
----------------------------
+IPython Documentation
+---------------------
 
-Please open manual.pdf for a PDF version of IPython's user manual, or go to
-the manual/ directory for an HTML version.
+This directory contains the majority of the documentation for IPython. 
+
+Requirements
+------------
+The following tools are needed to build the documentation:
+
+sphinx
+
+On Debian-based systems, you should be able to run::
+
+    sudo apt-get install sphinx 
+
+The documentation gets built using ``make``, and comes in several flavors.
+
+``make html`` - build the API and narrative documentation web pages, this
+is the the default ``make`` target, so running just ``make`` is equivalent to
+``make html``. 
+
+``make html_noapi`` - same as above, but without running the auto-generated
+API docs. When you are working on the narrative documentation, the most time
+consuming portion  of the build process is the processing and rending of the
+API documentation. This build target skips that.
+
+``make pdf`` will compile a pdf from the documentation.
+
+You can run ``make help`` to see information on all possible make targets.
 
 
-Bugs and future developments
-----------------------------
 
-The new_design.pdf document is a description of the goals for IPython's future
-development.  It includes a TODO/bugs section listing all currently known bugs
-in IPython.  Please report any bug you encounter if it is not already listed
-there.