Add CHANGES for history track and better versioning

CHANGES

+
+Change log
+==========
+
+Version 0.0.4 (2013-02-04)
+
+  - Add CHANGES for history track and better versioning
+
+Version 0.0.3 (2013-02-04)
+  
+  - Publish on PyPI, supports read patch from file, pipe and diff output from
+    revision tools (thanks to `Steven Myint <https://github.com/myint>`_)

MANIFEST.in

+include CHANGES
 include LICENSE
 include Makefile
 include README.rst

README.rst

 Cdiff
 =====
 
-View **colored**, **incremental** diff in unified format or **side by side**
-with **auto pager**.  Requires python (>= 2.5.0) and ``less``.
+Term based tool to view **colored**, **incremental** diff in unified format or
+**side by side** with **auto pager**.  Requires python (>= 2.5.0) and ``less``.
 
 .. image:: http://ymattw.github.com/cdiff/img/default.png
    :alt: default
 Known issue
 -----------
 
-- Only support unified format for input diff
+- Only support unified diff for input format
 - Side by side mode has alignment problem for wide chars
+
+See also
+--------
+
+I have another tool `coderev <https://github.com/ymattw/coderev>`_ which
+generates side-by-side diff pages for code review from two given files or
+directories, I found it's not easy to extend to support git so invented
+`cdiff`.  Idea of ansi color markup is also from project `colordiff
+<https://github.com/daveewart/colordiff>`_.
+

setup.py

     os.unlink(link_name)
 os.symlink('src/cdiff.py', link_name)
 
-with open('README.rst') as doc:
-    long_description = doc.read()
+with open('CHANGES') as changes:
+    for change in changes:
+        if change.startswith('Version '):
+            version = change.split()[1]
+            break
+    changes.seek(0)
+    with open('README.rst') as doc:
+        long_description = doc.read() + changes.read()
 
 setup(
     name = 'cdiff',
-    version = '0.0.3',
+    version = version,
     author = 'Matthew Wang',
     author_email = 'mattwyl@gmail.com',
     license = 'BSD-3',
-    description = ('View colored, incremental diff in unified format or side '
-                   'by side with auto pager'),
+    description = ('Term based tool to view colored, incremental diff in '
+                   'unified format or side ' 'by side with auto pager'),
     long_description = long_description,
     keywords = 'colored incremental side-by-side diff',
     url = 'https://github.com/ymattw/cdiff',
     classifiers = [
-        'Development Status :: 3 - Alpha',
+        'Development Status :: 4 - Beta',
         'Topic :: Utilities',
         'License :: OSI Approved :: BSD License',
         'Environment :: Console',