Update setup.py, Remove useless files

We can now use the lib as a git submodule or deploy using setup.py

Author: CyrilPeponnet

.gitignore

@@ -3,3 +3,4 @@
 /doc
 *.pyc
 /html
+/build

TODO

@@ -22,6 +22,7 @@
 has become a separate product no longer maintened by the previous author.
 This is distributed under the terms of GPL.""",
       download_url='https://github.com/ArchipelProject/xmpppy/releases',
+      package_dir={'xmpp': ''},
       packages=['xmpp'],
       license="GPL",
       platforms="All",