This is needed to allow __init__ methods to be documented along with
their class definition.

Change-Id: I7371bd038e3898cc97282c75e20981d9fd1cb9a5

The parser is a large enough project that some proper documentation is
needed.  In order to facilitate contribution to the ramdump parser, add
some documentation with a standard sphinx Makefile to build it.

Change-Id: Idfbc65173dc082c3144ec811a75a9c226c73ec53