Added Sphinx Based Documentation

Now have HTML based documentation generated using sphinx software.
Modified setup.py Based on New Documentation

Have changed the long description in setup.py to use a doc string instead of the
README.md file.  The doc string used reStructuredText format to link to the
documentation out on the web at pythonhosted.org/blogtool.
Made doc builddocs script

Simply changed bldcmd from a holder to an executable script with the proper
command line incantation for building the docs.