New setup.py and document/make targets update for issue #1

.gitignore

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

Makefile

 
 TESTS = git svn crlf strange
 
-.PHONY: dogfood test $(TESTS)
+.PHONY: dogfood test $(TESTS) clean sdist
 
 dogfood:
 	src/cdiff.py -s
 	python3 src/cdiff.py tests/$@.diff -s
 	python3 src/cdiff.py tests/$@.diff | diff -u tests/$@.diff -
 
+clean:
+	rm -rf build/ cdiff.egg-info/ dist/
+
+sdist:
+	./setup.py sdist
+
 # vim:set noet ts=8 sw=8:

README.md

 ## About
 
-View **incremental**, **colored** diff in unified format or in **side by side**
-mode with **auto pager**.  Requires python (>= 2.5.0) and `less`.
+View **incremental**, **colored** diff in unified format or **side by side**
+with **auto pager**.  Requires python (>= 2.5.0) and `less`.
 
 ![Default](http://ymattw.github.com/cdiff/img/default.png)
 ![Side by side](http://ymattw.github.com/cdiff/img/side-by-side.png)
 
 ## Installation
 
+Cdiff is not in PyPI yet, so far you could download the script directly or use
+the `setup.py` to install.
+ 
+**Download directly**
+
 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`.
     curl -ksS https://raw.github.com/ymattw/cdiff/master/src/cdiff.py > ~/bin/cdiff
     chmod +x ~/bin/cdiff
 
+**Install with the setup.py**
+
+You can run the setup.py from the source to install `cdiff` to system wide
+directory.
+
+    git clone https://github.com/ymattw/cdiff.git
+    cd cdiff
+    sudo ./setup.py install
+
+This usually installs it as `/usr/local/bin/cdiff`.
+
 ## Usage
 
 Cdiff reads diff from diff (patch) file if given, or stdin if redirected, or
 View a diff (patch) file:
 
     cdiff foo.patch             # view incremental, colored udiff
-    cdiff foo.patch -s          # view in side by side mode
+    cdiff foo.patch -s          # view side by side
     cdiff foo.patch -s -w 90    # use text width 90 other than default 80
 
 Read diff from local modification in a svn, git, or hg workspace:

setup.py

+#!/usr/bin/env python
+
+from __future__ import with_statement
+from setuptools import setup
+
+with open('README.md') as doc:
+    long_description = doc.read()
+
+setup(
+    name = 'cdiff',
+    version = '0.0.1',
+    author = 'Matthew Wang',
+    author_email = 'mattwyl@gmail.com',
+    license = 'BSD-3',
+    description = ('View incremental, colored diff in unified format or side '
+                   'by side with auto pager'),
+    long_description = long_description,
+    keywords = 'incremental colored side-by-side diff',
+    url = 'https://github.com/ymattw/cdiff',
+    classifiers = [
+        'Development Status :: 3 - Alpha',
+        'Topic :: Utilities',
+        'License :: OSI Approved :: BSD License',
+        'Environment :: Console',
+        'Intended Audience :: Developers',
+        'Operating System :: MacOS :: MacOS X',
+        'Operating System :: POSIX',
+        'Operating System :: Unix',
+        'Programming Language :: Python',
+    ],
+    packages = [],
+    scripts = ['src/cdiff.py'],
+    entry_points = {
+        'console_scripts': [
+            'cdiff = cdiff:main',
+        ],
+    },
+)