Add clear settings tests
Update settings test fixtures
Fix db configuration
[FEATURE] use winston for all logging

so far it was only used for the morgan middleware, logging express routes
- expose a logger object from logger.js that should be used for logging
- append timestamp to log
Merge pull request #150 from geertweening/develop

[FEATURE] use winston for all logging
Add post trustlines test
Merge pull request #151 from ripple/tests

Update tests
[FIX] if wrong hash provided, respond with 400

invalid request
[FIX] respond 404 with transaction type for txnNotFound
Add test db interface, fix test errors
[TASK] remove unused from grunt
[TASK] bump ripple-lib to v0.8.2-rc2
[FIX] find config.json relative to config-loader's dir
[TEST] payments mock flow
empty money pool
granting trustlines
trustlines mock response
[FIX] .gitignore
[TEST] move and fix test2 tests
[TASK] run tests by `npm test`