rc4 version bump, DESCRIPTION.txt added and used to populate the appropriate field.

DESCRIPTION.txt

+Theano is a Python library that allows you to define, optimize, and
+efficiently evaluate mathematical expressions involving
+multi-dimensional arrays. It is built on top of NumPy_. Theano
+features:
+
+ * **tight integration with NumPy:** a similar interface to NumPy's.
+   numpy.ndarrays are also used internally in Theano-compiled functions.
+ * **transparent use of a GPU:** perform data-intensive computations up to
+   140x faster than on a CPU (support for float32 only).
+ * **efficient symbolic differentiation:** Theano can compute derivatives
+   for functions of one or many inputs.
+ * **speed and stability optimizations:** avoid nasty bugs when computing
+   expressions such as log(1+ exp(x) ) for large values of x.
+ * **dynamic C code generation:** evaluate expressions faster.
+ * **extensive unit-testing and self-verification:** includes tools for
+   detecting and diagnosing bugs and/or potential problems.
+
+Theano has been powering large-scale computationally intensive scientific
+research since 2007, but it is also approachable enough to be used in the
+classroom (IFT6266 at the University of Montreal).
+
+.. _NumPy: http://numpy.scipy.org/

setup.py

@@ -26,7 +26,7 @@ MAINTAINER          = "LISA laboratory, University of Montreal"
 MAINTAINER_EMAIL    = "theano-dev@googlegroups.com"
 DESCRIPTION         = ('Optimizing compiler for evaluating mathematical ' +
                        'expressions on CPUs and GPUs.')
-LONG_DESCRIPTION    = ""
+LONG_DESCRIPTION    = open("DESCRIPTION.txt").read()
 URL                 = "http://deeplearning.net/software/theano/"
 DOWNLOAD_URL        = ""
 LICENSE             = 'BSD'
@@ -37,7 +37,7 @@ PLATFORMS           = ["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"]
 MAJOR               = 0
 MINOR               = 3
 MICRO               = 0
-SUFFIX              = "rc3"  # Should be blank except for rc's, betas, etc.
+SUFFIX              = "rc4"  # Should be blank except for rc's, betas, etc.
 ISRELEASED          = False
 
 VERSION             = '%d.%d.%d%s' % (MAJOR, MINOR, MICRO, SUFFIX)