Clean and get setup.py working once and for all.

Fixes:
    README.rst now included
    Double line spacing removed from long_description
    Source package now includes tests, examples, etc using Manifest.in
    README.rst typos fixed
    Added README.rst section on installing dnspython for Python3
    Version bumped to RC2
    Version is now taken from sleekxmpp.version.__version__ without
        having to pull in the entire library
    Added 'test' command for setup.py
    Simplified testall.py
    Docs build cleanly from source package after installation

setup.py

@@ -4,16 +4,15 @@
 # Copyright (C) 2007-2011 Nathanael C. Fritz
 # All Rights Reserved
 #
-# This software is licensed as described in the README file,
-# which you should have received as part of this distribution.
-#
+# This software is licensed as described in the README.rst and LICENSE
+# file, which you should have received as part of this distribution.
 
-# from ez_setup import use_setuptools
-from distutils.core import setup
 import sys
+from distutils.core import setup, Command
+# from ez_setup import use_setuptools
 
-import sleekxmpp
-
+from testall import TestCommand
+from sleekxmpp.version import __version__
 # if 'cygwin' in sys.platform.lower():
 #     min_version = '0.6c6'
 # else:
@@ -27,10 +26,10 @@ import sleekxmpp
 #
 # from setuptools import setup, find_packages, Extension, Feature
 
-VERSION          = sleekxmpp.__version__
+VERSION          = __version__
 DESCRIPTION      = 'SleekXMPP is an elegant Python library for XMPP (aka Jabber, Google Talk, etc).'
 with open('README.rst') as readme:
-    LONG_DESCRIPTION = '\n'.join(readme)
+    LONG_DESCRIPTION = ''.join(readme)
 
 CLASSIFIERS      = [ 'Intended Audience :: Developers',
                      'License :: OSI Approved :: MIT License',
@@ -93,5 +92,7 @@ setup(
     license      = 'MIT',
     platforms    = [ 'any' ],
     packages     = packages,
-    requires     = [ 'tlslite', 'pythondns' ],
+    requires     = [ 'dnspython' ],
+    classifiers  = CLASSIFIERS,
+    cmdclass     = {'test': TestCommand}
 )