setup.py improvements and routersploit/resources/ installation via MANIFEST.in (#494)

* Install rsf.py

* Add an __init__.py in routersploit/resources

Previously, without it, routersploit/resources/wordlists code were not properly
picked up by setup.py.

* Add a MANIFEST.in in order to install all needed package files

Previously package files in resources subdirectories (i.e. ssh_keys, vendors
and wordlists) were not installed as part of setup.py.

MANIFEST.in

+recursive-include routersploit/resources/ssh_keys *.json *.key
+recursive-include routersploit/resources/vendors *.dat
+recursive-include routersploit/resources/wordlists *.txt

setup.py

@@ -15,6 +15,7 @@ setup(
     download_url="https://github.com/threat9/routersploit/",
     packages=find_packages(),
     include_package_data=True,
+    scripts=('rsf.py',),
     entry_points={},
     install_requires=[
         "future",