[FIX] check for issuer for non-xrp payments
Merge pull request #156 from nerdylocks/payments-issuer

[FIX] check and validate issuer upon payment
[FIX] respond with 404 for actNotFound
[TASK] respond with 500's for failed requests
[FIX] use 500 for api errors

402 for requestFailed has been phased out
[TASK] introduce DatabaseError

for communicating errors on the database level
[TASK] fix travis build

copy over config-example.json so ripple-rest has a config to work with
[TASK] fix coverage by running `_mocha`

as suggested here https://github.com/gotwarlost/istanbul/issues/44
[DOC] update coveralls badge to .svg
[FEATURE] display version on startup
Merge pull request #162 from geertweening/develop

[FEATURE] display version on startup
[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`
[TEST] run test2 tests with mocha from npm test
[TASK] move test2 to root so npm test can run both test dirs