New configuration, adapt existing code
[FEATURE] Add NotificationParser class.
[FEATURE] Use NotificationParser in notifications api endpoint.
[DOC] Readd NotificationParser documentation.
Merge pull request #119 from ripple/notification-parser

Notification parser
Remove postgres details from travis
Merge pull request #120 from geertweening/develop

[TASK] bump ripple-lib to 0.8.0
[FIX] Check that tx.meta exists before accessing
Check DATABASE_URL is string
Remove extraneous file
Merge pull request #122 from ShiftFinancial/fix/check-meta-before-accessing

[FIX] Check that tx.meta exists before accessing
Do not connect to rippled in Travis
[FIX] Allow browser-based client to make POST to ripple-rest server
Merge pull request #123 from AiNoKame/content-type-fix

[FIX] Allow browser-based client to make POST to ripple-rest server
Merge pull request #121 from ripple/config

New configuration, adapt existing code
[FEATURE] introduce http_utils class

to format responses
[FEATURE] convert info class to use http_utils to respond
[TASK] rename express_app to app