create symlink in top dir for clean src; doc fix

.gitignore

 *.pyc
 *~
-MANIFEST
-build/
-cdiff.egg-info/
-dist/
+/MANIFEST
+/cdiff
+/build/
+/cdiff.egg-info/
+/dist/

MANIFEST.in

 include Makefile
 include README.rst
 include tests/*
+exclude cdiff

Makefile

 	python3 src/cdiff.py tests/$@.diff | diff -u tests/$@.diff -
 
 clean:
-	rm -rf src/cdiff MANIFEST build/ cdiff.egg-info/ dist/
+	rm -f cdiff MANIFEST
+	rm -rf build/ cdiff.egg-info/ dist/
 
 dist-test:
 	./setup.py build sdist upload -r $(TESTPYPI)

README.rst

 Installation
 ------------
 
-**Install with pip**
+Install with pip
+~~~~~~~~~~~~~~~~
 
-Cdiff is already listed on `PyPI <http://pypi.python.org/pypi/cdiff>`, you can
+Cdiff is already listed on `PyPI <http://pypi.python.org/pypi/cdiff>`_, you can
 install with ``pip`` if you have the tool.
 
 .. code:: sh
  
     sudo pip install cdiff
 
-**Install with setup.py**
+Install with setup.py
+~~~~~~~~~~~~~~~~~~~~~
 
 You can also run the setup.py from the source if you don't have ``pip``.
 
     cd cdiff
     sudo ./setup.py install
 
-**Download directly**
+Download directly
+~~~~~~~~~~~~~~~~~
 
 Both ``pip`` and ``setup.py`` installs cdiff to system wide directory, if you
 want a minimal tool without the boring external dependencies (like me), just
-save `src/cdiff.py <https://raw.github.com/ymattw/cdiff/master/src/cdiff.py>` to
-whatever directory which is in your ``$PATH``, for example, ``$HOME/bin`` is
+save `src/cdiff.py <https://raw.github.com/ymattw/cdiff/master/src/cdiff.py>`_
+to whatever directory which is in your ``$PATH``, for example, ``$HOME/bin`` is
 in my ``$PATH``, so I save the script there and name as ``cdiff``.
 
 .. code:: sh

setup.py

 import os
 
 # Create symlink so that to use 'scripts' w/o '.py'
-link_name = 'src/cdiff'
+link_name = 'cdiff'
 if os.path.exists(link_name):
     os.unlink(link_name)
-os.symlink('cdiff.py', 'src/cdiff')
+os.symlink('src/cdiff.py', link_name)
 
 with open('README.rst') as doc:
     long_description = doc.read()
 
 setup(
     name = 'cdiff',
-    version = '0.0.2',
+    version = '0.0.3',
     author = 'Matthew Wang',
     author_email = 'mattwyl@gmail.com',
     license = 'BSD-3',
     package_dir = {'': 'src'},
     packages = [''],
     py_modules = ['cdiff'],
-    scripts = ['src/cdiff'],
+    scripts = [link_name],
 )