update requirements for the project

requirements.txt

@@ -1,7 +1,9 @@
-click==6.6
 Flask==0.11.1
-itsdangerous==0.24
+Flask-Session==0.3.0
 Jinja2==2.8
 MarkupSafe==0.23
 Werkzeug==0.11.11
-wheel==0.24.0
+argparse==1.2.1
+click==6.6
+itsdangerous==0.24
+wsgiref==0.1.2