Added setup.py. Run: python -m wifite

As asked by @blshkv in #102.

Running: `sudo python -m wifite`
Install: `sudo python setup.py install`

These steps (and "uninstalling") are mentioned in the README.

setup.py

@@ -0,0 +1,40 @@
+from distutils.core import setup
+
+from wifite.config import Configuration
+
+setup(
+    name='wifite',
+    #version='2.1.9',
+    version=Configuration.version,
+    author='derv82',
+    author_email='derv82@gmail.com',
+    url='https://github.com/derv82/wifite2',
+    packages=[
+        'wifite',
+        'wifite/attack',
+        'wifite/model',
+        'wifite/tools',
+        'wifite/util',
+    ],
+    data_files=[
+        ('', ['wordlist-top4800-probable.txt'])
+    ],
+    entry_points={
+        'console_scripts': [
+            'wifite = wifite.wifite:entry_point'
+        ]
+    },
+    license='GNU GPLv2',
+    scripts=['bin/wifite'],
+    description='Wireless Network Auditor for Linux',
+    #long_description=open('README.md').read(),
+    long_description='''Wireless Network Auditor for Linux.
+
+    Cracks WEP, WPA, and WPS encrypted networks.
+
+    Depends on Aircrack-ng Suite, Tshark (from Wireshark), and various other external tools.''',
+    classifiers = [
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3"
+    ]
+)