add setup.py and remove __init__.py

根目录下的__init__.py会导致测试代码无法找到引用的包。

setup.py

@@ -0,0 +1,39 @@
+import codecs
+from setuptools import setup
+
+
+with codecs.open('README.rst', encoding='utf-8') as f:
+    long_description = f.read()
+
+setup(
+    name="shadowsocks",
+    version="2.6.12",
+    license='http://www.apache.org/licenses/LICENSE-2.0',
+    description="A fast tunnel proxy that help you get through firewalls",
+    author='clowwindy',
+    author_email='clowwindy42@gmail.com',
+    url='https://github.com/shadowsocks/shadowsocks',
+    packages=['shadowsocks', 'shadowsocks.crypto'],
+    package_data={
+        'shadowsocks': ['README.rst', 'LICENSE']
+    },
+    install_requires=[],
+    entry_points="""
+    [console_scripts]
+    sslocal = shadowsocks.local:main
+    ssserver = shadowsocks.server:main
+    """,
+    classifiers=[
+        'License :: OSI Approved :: Apache Software License',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.6',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy',
+        'Topic :: Internet :: Proxy Servers',
+    ],
+    long_description=long_description,
+)