[minor] requirements - changed to lowercase

requirements.txt

@@ -1,6 +1,6 @@
-Jinja2
-MarkupSafe
-MySQL-python
+jinja2
+markupsafe
+mysql-python
 chardet
 dropbox
 google-api-python-client
@@ -12,4 +12,6 @@ python-memcached
 pytz==2013d
 requests
 six
-termcolor
+termcolor
+werkzeug
+gunicorn