README/introduction: Add links to PyPI/Github/Github Issues.

README

@@ -81,12 +81,28 @@ To install using ``easy_install``,::
 
     $ easy_install celery
 
-If you have downloaded a source tarball you can install it
-by doing the following,::
+Downloading and installing from source
+--------------------------------------
 
+Download the latest version of ``celery`` from
+http://pypi.python.org/pypi/celery/
+
+You can install it by doing the following,::
+
+    $ tar xvfz celery-0.0.0.tar.gz
+    $ cd celery-0.0.0
     $ python setup.py build
     # python setup.py install # as root
 
+Using the development version
+------------------------------
+
+
+You can clone the repository by doing the following::
+
+    $ git clone git@github.com:ask/celery.git celery
+
+
 Usage
 =====
 
@@ -261,6 +277,22 @@ Here's an example of a periodic task:
 **Note:** Periodic tasks does not support arguments, as this doesn't
 really make sense.
 
+
+Bug tracker
+===========
+
+If you have any suggestions, bug reports or annoyances please report them
+to our issue tracker at http://github.com/ask/celery/issues/
+
+Contributing
+============
+
+Development of ``celery`` happens at Github: http://github.com/ask/celery
+
+You are highly encouraged to participate in the development
+of ``celery``. If you don't like Github (for some reason) you're welcome
+to send regular patches.
+
 License
 =======