Python package configuration - setuptools (#444)

* Adding setup.py

* Updating version to 3.1.0

setup.py

+from setuptools import setup, find_packages
+
+
+with open("README.md", "r") as f:
+    long_description = f.read()
+
+setup(
+    name="routersploit",
+    version="3.1.0",
+    description="Exploitation Framework for Embedded Devices",
+    long_description=long_description,
+    author="Threat9",
+    author_email="marcin@threat9.com",
+    url="https://www.threat9.com",
+    download_url="https://github.com/threat9/routersploit/",
+    packages=find_packages(),
+    include_package_data=True,
+    entry_points={},
+    install_requires=[
+        "future",
+        "requests",
+        "paramiko",
+        "pysnmp",
+        "pycrypto",
+    ],
+    extras_require={
+        "tests": [
+            "pytest",
+            "pytest-forked",
+            "pytest-xdist",
+            "flake8",
+        ],
+    },
+    classifiers=[
+        "Operating System :: POSIX",
+        "Environment :: Console",
+        "Environment :: Console :: Curses",
+        "License :: OSI Approved :: BSD License",
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 3.6",
+        "Intended Audience :: Developers",
+        "Intended Audience :: Education",
+        "Intended Audience :: Information Technology",
+        "Intended Audience :: Science/Research",
+        "Intended Audience :: System Administrators",
+        "Intended Audience :: Telecommunications Industry",
+        "Topic :: Security",
+        "Topic :: System :: Networking",
+        "Topic :: Utilities",
+    ],
+)