new schema
add new api rules
add syncAll function to sync all tables
add mocha test framework
add api to list categories and create category
reorg
add test about creating new event
api to create event
test to get event info by event title as id
set res.end() instead of return res
add api to get event by title
test category using global data
add api to add a particular event to a particular category.
reorg test story description
get cause just only a particular event to avoid duplicate cause title problem
add api to list events for a particular category
rename getEventByTitle to getEvent
reorg sturcture
add api to create cause for a particular event
add api to get cause of a particular event