Version bump to 3.1.2

Updated install instructions and setup.py since impacket 0.9.15 has been
released!

MANIFEST.in

@@ -1,2 +1,4 @@
+include README.md
+include LICENSE
 recursive-include cme/data *
 recursive-include cme/modules *

README.md

@@ -38,14 +38,12 @@ Use [virtualenvwrapper](https://virtualenvwrapper.readthedocs.org/en/latest/) to
 To get the latest stable version: 
 
 ```
-#~ pip install git+https://github.com/CoreSecurity/impacket
 #~ pip install crackmapexec
 ```
 
 If you like living on the bleeding-edge:
 
 ```
-#~ pip install git+https://github.com/CoreSecurity/impacket
 #~ git clone https://github.com/byt3bl33d3r/CrackMapExec
 #- cd CrackMapExec && git submodule init && git submodule update --recursive
 #~ python setup.py install

requirements.txt

@@ -1,9 +1,9 @@
-git+https://github.com/CoreSecurity/impacket
+impacket>=0.9.15
 gevent
 netaddr
 pycrypto
 pyasn1
 termcolor
 requests
 pyOpenSSL
-msgpack-python
+msgpack-python

setup.py

@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 
 setup(name='crackmapexec',
-    version='3.1.1',
+    version='3.1.2',
     description='A swiss army knife for pentesting Windows/Active Directory environments',
     classifiers=[
         'License :: OSI Approved :: BSD License',
@@ -16,7 +16,7 @@
         "cme", "cme.*"
     ]),
     install_requires=[
-        'impacket==0.9.15dev0',
+        'impacket>=0.9.15',
         'gevent',
         'netaddr',
         'pyOpenSSL',
@@ -25,8 +25,7 @@
         'termcolor',
         'requests',
         'msgpack-python'
-      ],
-    dependency_links = ['https://github.com/CoreSecurity/impacket/archive/master.zip#egg=impacket-0.9.15dev0'],
+    ],
     entry_points = {
         'console_scripts': ['crackmapexec=cme.crackmapexec:main', 'cmedb=cme.cmedb:main'],
     },