update requirements

requirements.txt

@@ -6,11 +6,12 @@ dropbox==1.6
 google-api-python-client==1.2
 httplib2==0.8
 markdown2==2.1.0
-mysql-utilities==1.3.5
 pygeoip==0.2.7
 python-dateutil==2.1
 python-memcached==1.53
-pytz==2013b
+pytz==2013d
 requests==1.2.3
 six==1.4.0
-termcolor==1.1.0
+termcolor==1.1.0
+Werkzeug==0.9.4
+gunicorn==18.0