Use sphinx for generating documentation

This adds sphinx based documentation generation.  For now,
this manily renders some introduction and the autodoc-genreated
class/method reference from the source code for our libraries.

Actual user-level documentation for pySim-{prog,shell,read} remains
to be added separately

Change-Id: I52603e93c2c129a9e79687da6c534fa56a40a649

docs/library.rst

@@ -0,0 +1,92 @@
+pySim library
+=============
+
+pySim filesystem abstraction
+----------------------------
+
+.. automodule:: pySim.filesystem
+   :members:
+
+pySim commands abstraction
+--------------------------
+
+.. automodule:: pySim.commands
+   :members:
+
+pySim Transport
+---------------
+
+The pySim.transport classes implement specific ways how to
+communicate with a SIM card.  A "transport" provides ways
+to transceive APDUs with the card.
+
+The most commonly used transport uses the PC/SC interface to
+utilize a variety of smart card interfaces ("readers").
+
+Transport base class
+~~~~~~~~~~~~~~~~~~~~
+
+.. automodule:: pySim.transport
+   :members:
+
+
+calypso / OsmocomBB transport
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This allows the use of the SIM slot of an an OsmocomBB compatible phone with the TI Calypso chipset,
+using the L1CTL interface to talk to the layer1.bin firmware on the phone.
+
+.. automodule:: pySim.transport.calypso
+   :members:
+
+
+AT-command Modem transport
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This transport uses AT commands of a cellular modem in order to get access to the SIM card inserted
+in such a modem.
+
+.. automodule:: pySim.transport.modem_atcmd
+   :members:
+
+
+PC/SC transport
+~~~~~~~~~~~~~~~
+
+PC/SC is the standard API for accessing smart card interfaces
+on all major operating systems, including the MS Windows Family,
+OS X as well as Linux / Unix OSs.
+
+.. automodule:: pySim.transport.pcsc
+   :members:
+
+
+Serial/UART transport
+~~~~~~~~~~~~~~~~~~~~~
+
+This transport implements interfacing smart cards via
+very simplistic UART readers.  These readers basically
+wire together the Rx+Tx pins of a RS232 UART, provide
+a fixed crystal oscilator for clock, and operate the UART
+at 9600 bps.  These readers are sometimes called `Phoenix`.
+
+.. automodule:: pySim.transport.serial
+   :members:
+
+pySim utility functions
+-----------------------
+
+.. automodule:: pySim.utils
+   :members:
+
+pySim exceptions
+----------------
+
+.. automodule:: pySim.exceptions
+   :members:
+
+pySim card_handler
+------------------
+
+.. automodule:: pySim.card_handler
+   :members: