Merge pull request #8 from xiatao123/master

updated API class to update user's interest and story_list automatically every 1min for testing purpose
Fixed encoding problem.
Use MongoHQ service now. Generalize data provider class for deployment.
Merge pull request #9 from madimalo/master

Fixed the encoding problem
Merge branch 'master' of https://github.com/frankyanwang/SmartRead

Conflicts:
	data_store/feedinsert.js
Clean up.
add Procfile.
Make image max at 200px for now.
merge the db change and encoding fix.
Merge pull request #10 from madimalo/master

you can merge the encoding fix now.
Fixed the database close connection issue. Also Add category to tags. Better organize code for nested callbacks.
Fixed one bug when connect to mongohq.
make sure callback is a function.
Use production settings for Heroku
Use Heroku env to config settings for production.
add a start_kpi.bash to run a 5 mins update