Bump flask to 0.11.1
Bump flask to 0.11.1

One of the main advantages is the easy debug mode,
with autoreload capabilities.

Several other fixes & features:
http://flask.pocoo.org/docs/0.11/changelog/#version-0-11

samteezy/snappass-heroku,frontfoot/snappass,pinterest/snappass,frontfoot/snappass,samteezy/snappass-heroku,frontfoot/snappass,pinterest/snappass,samteezy/snappass-heroku,pinterest/snappass