added python requirements.txt

Author: sahat

examples/server/python/requirements.txt

@@ -0,0 +1,10 @@
+Flask==0.10.1
+Flask-SQLAlchemy==1.0
+Jinja2==2.7.3
+MarkupSafe==0.23
+SQLAlchemy==0.9.7
+Werkzeug==0.9.6
+itsdangerous==0.24
+jwt==0.3.1
+requests==2.3.0
+requests-oauthlib==0.4.1